4 Rewrite the sentences using the correct form of the modal verbs can, have to or must.

4. Rewrite the sentences using the correct form of the modal verbs can, have to or must.

1. It's OK for Helen to watch TV this evening. Helen can watch TV this evening.
2. It's necessary for Anton to do a lot of homework. Anton has to do a lot of homework.
3. Don't leave your clothes on the floor! You must not leave your clothes on the floor!
4. It's OK for Olive to invite friends to her house. Olive can invite friends to her house.
5. Don't make so much noise, Carlotta! Carlotta must not make so much noise.
6. It isn't necessary for Pete to go home early. Pete doesn't have to go home early.
7. Is it OK for me to go to the cinema this afternoon? Can I go to the cinema this afternoon?
8. Is it necessary for Carl to tidy his room? Does Carl have to tidy his room?