Question

Read the sentences and complete the rules with have to, don't have to, must or mustn't
1 We use .... and ... for things that are necessary or obligatory.
2 We .... use for things that are not necessary (but we can do them if we want).
3 We use .... for things that we can't do because we don't have permission.​

Answer 1

Ответ:

1 We use have to and must for things that are necessary or obligatory.

2 We use don't have to for things that are not necessary (but we can do them if we want).

3 We use mustn't for things that we can't do because we don't have permission.​