Exercise 16. Complete the sentences with can, may, must, have to, need.

a

1.  Ann is very obedient. She ... not have acted against her father's will, I'm sure.

2. I ... be wrong but everything seemed to happen so quickly there.

3. The students were told that they ... take part in the discussion.

4. ... you be at home tonight?

5. ... I ask you how you new my address?

6. However difficult the task ... be, you are expected to do it in time.

7. ... you give the jury an example?

8. And yet she ... be fond of him or she'd never look at him as she did.

b

1. We ... not solve the problem in this way.

2. They ... practice their pronunciation every day.

3. We ... not speak in a whisper. There is nobody in.

4. I ... walk miles before I found a place where the river was wide.

5. ... we pass?

6. You ... be back at 10 o’clock.

7. You ... heat to form chondrules.

8. He ... wear a tie at work.