Correct Answer:
C. was repaired
The correct answer is C: was repaired. This sentence requires the passive voice because the subject, "The road," does not perform the action of repairing; instead, it receives the action. The phrase "last year" indicates that the action happened in the past, specifically the simple past tense.
To form the simple past passive voice, we use the past tense of the verb "to be" (was/were) followed by the past participle of the main verb. Since "The road" is singular, we use "was." The past participle of "repair" is "repaired." Therefore, "was repaired" is the correct construction.
- A: repairs – Incorrect. This is simple present active voice.
- B: repaired – Incorrect. This is simple past active voice, implying the road repaired itself.
- C: was repaired – Correct. This is simple past passive voice, indicating the road received the action of being repaired.
- D: has repaired – Incorrect. This is present perfect active voice.
The passive voice is essential when the action's recipient is more important than the doer, or when the doer is unknown or unimportant.