Надеюсь, я помог с решением:
N° 2 - Underline the correct word.
1. Must
2. Can't
3. Don't have to
4. Must
5. Mustn't
6. Can't
7. Have to
8. Needn't
9. Mustn't
10. Need
N° 3 - Look at the library rules and make sentences with *must* or *mustn't*
1. You mustn't make any noise.
2. You must be quiet.
3. You mustn't eat or drink.
4. You must be careful with the books.
5. You mustn't leave books on the table when you leave.
6. You must put the books back in the right place.
N° 4 - Choose the correct word.
1. A
2. B
3. A
4. C
5. A
N° 5 - Write the short forms.
1. She mustn't
2. They can't
3. You needn't
4. I don't have to
5. He doesn't need to
N° 6 - Read the situations and write appropriate sentences.
1. I needn't wash my dishes, because my sister is doing that.
2. You musntn't eat in a classroom.
3. [?]
4. You must be a quiet.
5. [?]