Author name: Umar

The correct logical order is A: Q-R-P-S. This sequence creates a coherent and flowing narrative about social media.

• Q) Social media is integral. This statement serves as an excellent introduction, establishing the main topic and its significance.
• R) It helps people connect. This sentence logically follows Q by providing a primary positive aspect or benefit of social media, elaborating on why it is considered integral.
• P) However it has disadvantages. The word "However" acts as a crucial transition, signaling a shift from discussing the positive aspects to introducing the negative ones. This creates a natural contrast in the flow of ideas.
• S) One drawback is fake news. This sentence provides a specific example of a disadvantage, directly supporting and elaborating on the general statement made in P. It gives concrete evidence for the claim of disadvantages.

This arrangement moves from a general introduction to a positive detail, then transitions to a general negative point, and finally provides a specific negative example, ensuring a clear and logical progression of thought.

The correct answer is A: voted. In this sentence, "the committee" functions as a collective noun. When a collective noun refers to the group acting as a single, unified entity, it takes a singular verb. The phrase "unanimously in favor of the proposal" clearly indicates that the committee acted as one unit, making a single decision. Furthermore, the action of voting has already been completed, requiring a past tense verb.

• A: voted is the simple past tense, correctly indicating a completed action by a singular entity in the past.
• B: vote is the base form and would be used for present simple plural or imperative, which doesn't fit the context.
• C: voting is the present participle and requires an auxiliary verb (e.g., "is voting," "was voting") to form a complete verb phrase.
• D: have voted is the present perfect tense, which implies an action completed recently or with relevance to the present, but the simple past "voted" is more direct and appropriate for a straightforward past event without specific present implications.

The correct answer is B: so. The structure "so...that" is a common grammatical construction used to express a cause-and-effect relationship or a degree of something that leads to a particular result. In the sentence, "She is so intelligent that she solved the puzzle instantly," her high level of intelligence (the cause) directly led to her ability to solve the puzzle quickly (the effect). This construction emphasizes the extent of her intelligence.

• A: very is an intensifier, but it doesn't typically precede "that" to form a cause-and-effect clause.
• C: much is generally used with comparatives or to quantify uncountable nouns, not in this specific degree-and-result structure.
• D: too implies an excessive degree, often with a negative connotation, and is usually followed by "to" (e.g., "too intelligent to be fooled"), not "that".

Therefore, "so" is the only option that correctly completes the sentence's intended meaning and grammatical structure.

The correct answer is A: melts. This sentence exemplifies a zero conditional structure, which is used to describe general truths, scientific facts, or situations where the outcome is always the same. The structure for the zero conditional is 'If + present simple, present simple'. In this case, 'If you heat ice' (present simple) leads directly to 'it melts into water' (present simple). This grammatical rule highlights a cause-and-effect relationship that is universally true. Other options like 'melted' (past tense), 'will melt' (future tense, used for first conditional or predictions), or 'would melt' (conditional, often for hypothetical situations) are incorrect because they do not fit the context of a universal truth. The consistent and predictable nature of ice turning into water when heated makes the simple present tense the only appropriate choice for both clauses in this type of conditional sentence.

The sentence states that "The CEO's speech was __________ and inspired everyone." The key phrase here is "inspired everyone," which suggests that the speech was highly effective, persuasive, and impactful. We need an adjective that describes a speech capable of achieving such a positive effect.

• A: boring would have the opposite effect; a boring speech would not inspire anyone.
• B: eloquent means fluent or persuasive in speaking or writing. An eloquent speech is characterized by clear, powerful, and moving language, which is precisely the kind of speech that would inspire an audience. This aligns perfectly with the outcome described.
• C: confusing implies a lack of clarity, making it difficult to understand, and thus unlikely to inspire or motivate.
• D: brief describes the length of the speech, not its quality or impact. While a brief speech can be inspiring, "brief" itself doesn't directly convey the quality of inspiration.

Therefore, "eloquent" is the most fitting adjective to describe a speech that had such a profound and inspiring effect on the audience, indicating both its quality and its power to move people.

The sentence "Despite working hard, he could not __________ success" implies a contrast: even with significant effort, a desired positive outcome (success) was not attained. We need a verb that conveys the idea of reaching or gaining success.

• A: achieve means to successfully bring about or reach (a desired objective or result) by effort, skill, or courage. This fits the context perfectly, indicating that despite his hard work, success remained out of his grasp.
• B: failed is a verb meaning to not succeed. If used, the sentence structure would be different, such as "he failed to achieve success" or "he failed to succeed." It doesn't fit directly after "could not."
• C: lose means to be deprived of or cease to have or retain (something). This is contrary to the idea of gaining success.
• D: avoid means to keep away from or stop oneself from doing (something). This is the opposite of what someone working hard for success would do.

Therefore, "achieve" is the only word that logically completes the sentence, conveying the intended meaning of not attaining success despite diligent effort.

The error in the sentence "I have not met him since five months" is the incorrect use of the word "since." In English grammar, "since" is used to indicate a specific starting point in time from which an action or state has continued (e.g., "since Monday," "since 2005," "since he left").

However, when referring to a duration or a period of time, the preposition "for" should be used. "For" specifies the length of time an action has occurred (e.g., "for five months," "for two hours," "for a decade"). In this sentence, "five months" clearly denotes a duration, not a starting point.

Therefore, "since" must be replaced with "for" to make the sentence grammatically correct. The accurate sentence is: "I have not met him for five months." This distinction between "since" and "for" is vital for expressing temporal relationships accurately, especially when using perfect tenses in English.

The error in the sentence "Either Sana or her sisters is coming" is found in the subject-verb agreement, specifically with "sisters is." When two subjects are joined by correlative conjunctions such as "either...or" or "neither...nor," the verb must agree with the subject that is closest to it.

In this particular sentence, the two subjects are "Sana" (which is singular) and "her sisters" (which is plural). Since "her sisters" is the subject immediately preceding the verb, and it is plural, the verb must also be plural. Therefore, "is" should be corrected to "are."

The grammatically correct sentence should be: "Either Sana or her sisters are coming." This rule, often referred to as the rule of proximity, is fundamental for ensuring proper subject-verb agreement in complex sentences and maintaining clarity and correctness in written and spoken English.

The error in the sentence "He told to me that he was leaving" lies in the use of the preposition "to" after the verb "told." The verb "tell" is a transitive verb, which means it directly takes an object (the person being told) without needing a preposition like "to." The correct construction is simply "He told me."

In contrast, the verb "say" often requires "to" when followed by an indirect object (the person). For example, you would say "He said to me that he was leaving." However, with "tell," the direct object immediately follows the verb. Therefore, including "to" makes the phrase redundant and grammatically incorrect.

The correct sentence should be: "He told me that he was leaving." Understanding this distinction between "tell" and "say" is crucial for accurate and natural English sentence construction, ensuring proper verb usage and avoiding common grammatical mistakes related to prepositions.

The error in the sentence "One of the boy has broken the window" is in the phrase the boy. The correct answer is the boy. This question tests the grammatical rule concerning the phrase "one of the." When using "one of the," it must always be followed by a plural noun. This is because you are referring to one item or person selected from a group of multiple items or people. Therefore, "boy" should be "boys." The correct construction would be "One of the boys has broken the window." The verb "has broken" is correct because the true subject of the sentence is "one" (singular), not "boys." If the subject were plural, the verb would also need to be plural (e.g., "Many of the boys have broken the window"). Understanding this specific grammatical structure is crucial for accurate subject-verb agreement and noun usage.

The correct answer is No error. This sentence is grammatically correct. The word "data" can be treated as either a plural noun (the Latin plural of "datum") or, increasingly in modern English, as a singular mass noun, especially in everyday usage and certain scientific or technical contexts. When treated as a singular mass noun, it takes a singular verb, such as "is." Therefore, "The data is being analysed carefully" is perfectly acceptable. The sentence is also correctly structured in the present continuous passive voice ("is being analysed"), indicating an ongoing action being performed on the data. The adverb "carefully" correctly modifies the verb "analysed," describing how the analysis is being conducted. There are no subject-verb agreement issues, tense errors, or incorrect word choices. This reflects the evolving usage of "data" in contemporary English, where its singular form is widely accepted.

The correct answer is for. This question tests the correct usage of prepositions of time, specifically distinguishing between "for" and "since." The preposition "for" is used to express a duration or a period of time. It answers the question "How long?" In the sentence "He has been waiting __________ two hours," "two hours" specifies the length of time that the waiting has been ongoing. Therefore, "for" is the appropriate choice. For example, you would say "for three days," "for a week," or "for many years." In contrast, "since" is used to indicate a specific starting point in time from which an action or state has continued. For instance, "since Monday," "since 2010," or "since he left." The other options, "from" and "at," are not used in this context to express duration. Mastering the distinction between "for" and "since" is fundamental for accurate temporal expressions in English.

The correct answer is by. This question assesses your knowledge of prepositions used to describe modes of transport. The preposition "by" is conventionally used to indicate the general method or means of transportation. When you refer to traveling using a specific type of vehicle or method, you typically use "by" followed by the noun without an article. For example, we say "by car," "by bus," "by train," "by plane," "by boat," or "by bicycle." However, if you specify the vehicle with an article or possessive pronoun, you would use a different preposition, such as "in my car" or "on the bus." The other options are incorrect in this context: "on" is used for public transport where you stand or walk (e.g., on the bus, on a train), "with" implies accompaniment or possession, and "from" indicates origin. Therefore, "by car" is the standard and correct idiomatic expression.

The correct answer is The / the. This question tests the appropriate use of definite articles, specifically "the." The definite article "the" is used when referring to something specific, unique, or already known to both the speaker and the listener. In this sentence, "moon" and "earth" refer to specific celestial bodies that are unique in our immediate solar system and are universally understood. There is only one natural satellite that revolves around our planet, and only one planet Earth in this context. Therefore, using "the" before both "moon" and "earth" correctly identifies them as specific and unique entities. Using "a" or "an" would imply a non-specific or one of many, which is incorrect for these nouns in this context. This rule applies to other unique geographical or astronomical entities like "the sun," "the sky," "the universe," or "the Pacific Ocean," emphasizing their singular nature within a given context. Understanding this rule is crucial for precise communication.

The correct answer is B: for. The verb "apologize" is almost always followed by the preposition "for" when indicating the reason or cause of the apology. When someone apologizes "for" something, they are expressing regret or remorse about a specific action, mistake, or situation. In this sentence, "his mistake" is the specific reason why he is offering an apology, making "for" the appropriate preposition to connect the apology to its cause.

• A: of is generally used to indicate possession or relationship, e.g., "the color of the sky."
• C: on is used for surfaces or specific topics, e.g., "sit on the chair," or "comment on the news."
• D: about can sometimes be used with "apologize" (e.g., "apologize about the delay"), but "for" is more common and precise when referring to a specific action or error, especially a mistake. "About" often implies a more general topic rather than a direct cause.

Therefore, "apologized for his mistake" is the standard and most grammatically correct construction in English. This idiomatic usage is fundamental for expressing regret clearly and accurately, highlighting the direct link between the apology and the action that necessitated it.

The correct answer is B: in. The phrase "interested in" is a common and correct idiom in English, used to express a feeling of curiosity or concern about something, or a desire to learn more about it. When you are "interested in" an activity, a subject, or a person, it means you find it engaging and want to dedicate attention or effort towards it. In this sentence, "learning French" is the activity that captures her interest.

• A: for is used to indicate purpose or recipient, e.g., "a gift for you," not interest.
• C: at is typically used for specific locations or times, e.g., "look at the picture," or "at 5 o'clock."
• D: on is used for surfaces or specific topics, e.g., "the book is on the table," or "a discussion on politics."

The preposition "in" correctly links the feeling of interest to the object or activity of that interest. It's a fixed expression that native speakers use naturally, and understanding such idiomatic phrases is key to mastering English grammar and usage. Therefore, "interested in learning French" is the grammatically sound and natural-sounding construction.

The correct answer is B: She exclaimed with sorrow that she had failed the test. This question tests your ability to convert exclamatory sentences from direct to indirect speech, paying attention to emotional expression and tense changes.

The interjection "Alas!" expresses sorrow or regret. When converting such a sentence to indirect speech, an appropriate reporting phrase like "exclaimed with sorrow" or "exclaimed sadly" is used. The conjunction "that" then introduces the reported statement.

Crucially, the tense must backshift. The original sentence, "I failed the test," uses the Simple Past tense. In indirect speech, the Simple Past tense backshifts to the Past Perfect tense. Therefore, "failed" becomes "had failed." The pronoun "I" also changes to "she" to match the subject of the reporting clause.

• Option A is incorrect because it retains the Simple Past tense ("failed") instead of backshifting to Past Perfect.
• Option C and D are incorrect because they use the present tense reporting verb "says" instead of the past tense "said," and their tenses for the reported action are also incorrect.

Therefore, "She exclaimed with sorrow that she had failed the test" is the most accurate conversion.

The correct answer is B: He said that he had finished his work. This question assesses your knowledge of converting direct speech into indirect speech, focusing on tense changes and pronoun shifts.

When a declarative sentence in direct speech is converted to indirect speech, the tense typically shifts backward (known as backshift). The original sentence, "I have finished my work," uses the Present Perfect tense. In indirect speech, the Present Perfect tense backshifts to the Past Perfect tense. Therefore, "have finished" becomes "had finished."

• The pronoun "I" changes to "he" to reflect the speaker.
• Similarly, "my work" changes to "his work."
• Option A is incorrect because "finished" (Simple Past) is not the correct backshift for Present Perfect.
• Option C is incorrect as it retains the Present Perfect tense ("has finished") and omits "his work," failing to apply the necessary backshift and pronoun change.
• Option D is incorrect because the pronoun "I" is not changed to "he."

Thus, "He said that he had finished his work" correctly applies all the rules for converting direct speech to indirect speech.

The correct answer is B: The teacher ordered not to make noise. This question tests your understanding of converting direct speech into indirect speech, specifically for imperative sentences (commands or requests).

When an imperative sentence like "Don't make noise" is converted to indirect speech, the reporting verb often changes to reflect the nature of the command, such as 'ordered', 'requested', 'advised', or 'told'. In this case, 'ordered' is highly appropriate. The imperative verb is then introduced by an infinitive. For negative imperatives, the structure becomes "not to + verb".

• Option A is incorrect because it retains the direct speech structure.
• Option C uses "said to not make noise," which is grammatically less preferred than "ordered not to make noise" for conveying a command, and "to not make" is a split infinitive, generally avoided in formal writing.
• Option D uses "tells," which is in the present tense, but the original reporting verb "said" is in the past tense, requiring consistency in the indirect speech.

Therefore, "The teacher ordered not to make noise" accurately transforms the command into indirect speech, maintaining the correct tense and structure.

Converting a direct question into indirect (reported) speech involves specific rules, especially for 'yes/no' questions like "Will you help me?"

• Reporting Verb: The reporting verb "said" changes to "asked" because it's a question.
• Introducing the Question: For 'yes/no' questions, we use "if" or "whether" to introduce the reported clause.
• Pronoun Changes: "You" refers to the person being asked (the listener, implied as 'me' in the reporting context), so it changes to "I." "Me" refers to the speaker (She), so it changes to "her."
• Tense Change (Backshift): The future simple tense "Will" shifts to the conditional past tense "would."
• Word Order: The question word order (auxiliary verb before subject) changes to a statement word order (subject before verb). So, "Will you help" becomes "if I would help."

Following these rules, "She said, 'Will you help me?'" correctly becomes "She asked if I would help her." Option B fails to backshift the tense. Options C and D are grammatically incorrect and do not follow the structure for reporting questions.

When converting direct speech to indirect (or reported) speech, several changes typically occur, especially when the reporting verb (like "said") is in the past tense. This is known as 'backshift' of tenses.

• Reporting Verb: "He said" remains the same.
• Conjunction: We usually add "that" to introduce the reported statement, though it's often optional.
• Pronoun Change: The pronoun "I" in direct speech refers to the original speaker (He), so it changes to "he" in indirect speech.
• Tense Change (Backshift): The present simple tense "am busy" in direct speech shifts one step back to the past simple tense in indirect speech. So, "am" becomes "was."

Applying these rules, "He said, 'I am busy'" transforms into "He said that he was busy." Option A ("he is busy") fails to backshift the tense. Options C and D ("I am busy," "I was busy") fail to change the pronoun from "I" to "he," which is crucial for accurate reporting. Therefore, option B is the correct conversion.

The question "Who __________ this painting?" is asking for the agent who performed the action of creating the painting. This implies an active voice construction, where the subject (whoever "Who" refers to) is performing the action. Since the painting already exists, the action of creating it must have happened in the past. Therefore, the simple past tense active voice is required.

• "Created" is the simple past tense of the verb "create." It correctly indicates a completed action performed by the subject.
• Option A, "was created," is in the past simple passive voice. This would be used if the painting were the subject and the creator was unknown or less important (e.g., "This painting was created by an unknown artist"). However, the question "Who" specifically asks for the active agent.
• Option C, "is created," is present simple passive.
• Option D, "were created," is past simple passive plural, which is incorrect for a singular painting and the active nature of the question.

Hence, "created" is the appropriate choice, directly asking for the person who actively performed the creation.

This sentence requires a passive voice construction because the subject, "The assignment," is the recipient of the action, not the performer. Assignments do not submit themselves; they are submitted by someone. When a modal verb (like "must," "can," "should," "will") is used in the passive voice, the structure is modal verb + be + past participle of the main verb.

• The modal verb in this sentence is "must."
• Following the modal, we need "be."
• The main verb is "submit," and its past participle form is "submitted."

Therefore, combining these, the correct phrase is "must be submitted." Option A, "submit," is in the active voice and would imply the assignment performs the action. Option C, "submitted," is a past participle but lacks the auxiliary "be" required for the passive construction with a modal. Option D, "submitting," is a present participle and would be used in an active continuous tense. Thus, "be submitted" is the only grammatically correct and contextually appropriate choice for the passive voice.

The original sentence, "They are building a new hospital," is in the present continuous active voice. To transform it into the passive voice, we need to follow a specific structure:

• The object of the active sentence becomes the subject of the passive sentence. Here, "a new hospital" is the object.
• The auxiliary verb "to be" is used in the same tense as the active verb, followed by "being" for continuous tenses. Since the active sentence uses "are building" (present continuous), the passive form will use "is being" (because "a new hospital" is singular).
• The main verb is changed to its past participle form. The past participle of "build" is "built."

Combining these elements, "A new hospital is being built" correctly forms the present continuous passive voice. Option B, "A new hospital was built," is past simple passive. Option C, "A new hospital builds," is present simple active. Option D, "A new hospital is built," is present simple passive. Therefore, option A is the only correct choice that maintains the original tense and meaning in the passive voice.

The correct answer is B: was written. This sentence is in the passive voice because the subject, 'The letter', is receiving the action of being written, rather than performing it. The phrase 'yesterday' clearly indicates that the action took place in the past. Therefore, we need to use the past simple passive form. The past simple passive is constructed using 'was' or 'were' (depending on the subject's number) followed by the past participle of the main verb. Since 'The letter' is singular, 'was' is the correct auxiliary verb. The past participle of 'write' is 'written'. Thus, 'was written' correctly forms the past simple passive voice. Options A ('is written', present passive), C ('wrote', active past simple), and D ('writes', active present simple) are incorrect as they do not fit the passive voice requirement for a past action.