Відповіді: Стр.38 (C)

C. Complete the sentences with must/mustn’t.

1. Must I wash the car now? I can do it later.

2. We must leave. We're late for the party.

3. You mustn’t talk in the library.

4. You mustn’t feed the animals at the zoo.

5. You must call her. It's her birthday!

6. You must study for your test tomorrow.