Choose the correct option to fill in the blank:
The broken railing on the school terrace ______ before the students return after the holidays.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → must be repaired
Modal + passive:
- When the subject does not do the action, we use the passive after a modal: modal + be + past participle (V3).
- The railing cannot repair anything. Someone else repairs it, so the passive must be repaired is needed.
- Complete sentence: The broken railing on the school terrace must be repaired before the students return after the holidays.