Answer keys of exercises of the passive form of modals

Complete the sentences with the given words in the passive.

1. Gerry (should, tell) should be told the truth as soon as possible.
2. Gerry (should, tell) should have been told the truth yesterday.
3. Food (must, keep) must be kept in a fridge.
4. They tried their best, but the door (couldn’t, open) couldn’t have been opened.
5. I (may offer)    may be offered a job soon because my interview was good yesterday.
6. My class is too crowded. It (should, divide) should be divided in half.
7. These book (should, return)    should have been returned     to the library last week.
8.  Annie’s chores (had better, finish)     had better be finished by the time her mom gets home.
9. The letter (must, send) must be sent to the director soon.
10. James (must, surprise) must have been surprised    when he saw ex-girlfriend.

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