1, The exercise need to be finished by you by tonight.

2, It’s necessary that she should be met by us.

3, John must be told not to go out in the rain by them.

4, Such a thing doesn’t need to be said by you.

5, Your hair needs to be cut.

6, This watch doesn’t need to be winded.

7, I’m sure your question will be laughed at by him.

8, Perhaps, he was sent to prison by them.

9, The man couldn’t be found by them.

10, The car couldn’t be found anywhere by them.

11, He must have been disappointed terribly that people told him they didn’t want…

12, She must have been threatened by them before sending her home.

13, It must have been these boys by whom my car was damaged.

14, It needn’t have been done by you.

15, The wall must be cleaned before being painted by you.