Відповіді: Стр.44 (a-b)

A. Choose a or b.

1. Don’t (b) touch the painting.

2. Please (b) turn off your mobile phone.

3. You must (b) wear a helmet.

4. Can we (a) feed the animals at the zoo?

5. Where can we buy a (a) ticket?

1-b; 2-b; 3-b; 4-a; 5-a;

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

You mustn’t bring your dog into the library.

You mustn’t eat or drink in the library.

You must be quiet.

You mustn’t talk on your mobile phone.

You mustn’t write on the books.

You must leave before 5 p.m.

You must give all books to the librarian.