That ______ be the postman; he doesn't usually arrive this early.
Answer and explanation
Correct answer: A. can't
- Step 1: 'Can't' expresses logical certainty that something is not true.
Answer
can't.
Why not the others: "mustn't" is wrong because 'mustn't' means prohibition, not deduction. "shouldn't" is wrong because 'shouldn't' expresses advice or expectation, not strong deduction. "needn't" is wrong because 'needn't' means no obligation.
Practise more Passives, gerunds, infinitives and modals.
Free questions with an explanation for every one, and full timed Cyprus English Language Certification (B2, C1, C2) mock tests.
More Passives, gerunds, infinitives and modals questions
- The new bridge ______ by the mayor next year.
- It is said that the president ______ the country secretly last week.
- We are having the room ______ before the guests arrive.
- The teacher made the students ______ the essay again.
- She was made ______ the whole report again.
- He remembered ______ the door, so he went back to check.