Correct answer: The student exclaimed with joy that he had won the scholarship. “Hurrah” expresses joy, so the reporting verb is “exclaimed with joy that”, and “has won” changes to “had won”.

• The student exclaimed with wonder he had won the scholarship: “With wonder” does not match the joy expressed by “Hurrah”, and “that” is missing.
• The student exclaimed with joy to he had won the scholarship: “To he had won” is ungrammatical.
• The student exclaimed with joy he had been won the scholarship: “Had been won” is an incorrect passive form.

Correct answer: Her doctor will have been visited by her by 7:00 PM. The future perfect passive is “will have been + past participle”, and the time phrase must be kept.

• Her doctor had been visited by her by 7:00 PM: “Had been visited” changes the tense to past perfect.
• Her doctor will have been visited by her: This option drops the time phrase “by 7:00 PM”.
• None of these: “None of these” is incorrect because the first option is correct.

Correct answer: Period. A period (full stop) ends a statement.

• Exclamation mark: An exclamation mark ends an exclamatory sentence.
• Question mark: A question mark ends a question.
• Comma: A comma separates parts within a sentence.

Correct answer: To avoid restarting a conflict. The idiom means not to disturb a situation that is calm, so as to avoid restarting a conflict.

• Making sleep mandatory: It is not about making sleep mandatory.
• Taking sleep for granted: It is not about taking sleep for granted.
• Discuss burning issue: It does not mean to discuss a burning issue.

Correct answer: Boils. The proverb is “A watched pot never boils”, meaning time seems to pass slowly when you wait anxiously.

• Cooks: “Cooks” is not the wording of the proverb.
• Burns: “Burns” is not the wording of the proverb.
• None of these: “None of these” is incorrect because “boils” is correct.

Correct answer: Yield. To prevail is to win or dominate, and its opposite is to yield or give way.

• Countdown: “Countdown” is unrelated.
• Modify: “Modify” means to change.
• Add: “Add” is unrelated.

Correct answer: Subtle. Imperceptible means so slight that it is hardly noticed, which is close to subtle.

• Mean: “Mean” means unkind or average.
• Obvious: “Obvious” is the opposite of imperceptible.
• Humble: “Humble” means modest.

Correct answer: to. “Be married to” is the correct collocation.

• with: “Married with” is not standard in this sense.
• from: “Married from” is incorrect.
• of: “Married of” is incorrect.

Correct answer: Galaxy : Star. A continent contains many countries, just as a galaxy contains many stars (a larger whole to its parts).

• University : Books: University : Books is not a whole-and-part hierarchy of the same kind.
• Player : Team: Player : Team reverses the order, because it goes from part to whole.
• Room : Building: Room : Building reverses the order, because it goes from part to whole.

Correct answer: Getting married. “Tie the knot” means to get married.

• Start a fight: Starting a fight is a different idiom.
• Tighten the rope: The literal meaning of tightening a rope is not the idiomatic one.
• To fail in exam: It has nothing to do with failing an exam.

Correct answer: Easily. “Easily” describes how an action is done, so it is an adverb.

• Lovely: “Lovely” is an adjective.
• Curly: “Curly” is an adjective.
• Misely: “Misely” is not a word.

Correct answer: Slew. “Slay” is irregular: slay – slew – slain.

• Slayed: “Slayed” is used only in some informal senses (for example, “she slayed the performance”).
• Slat: “Slat” is not a form of slay.
• Slays: “Slays” is the third-person present form.