
Answer — Exercise 31.4
Unit 31 - have to and must·English Grammar in Use
Question
Complete the sentences with mustn't, don't have to or doesn't have to.
Answer
- mustn't
- doesn't have to
- don't have to
- mustn't
- don't have to
- doesn't have to
- don't have to
- mustn't
- mustn't
- don't have to