F. Complete the sentences with must or mustn't.

F. Must or mustn't:

1. You must be quiet in the library. (It is a rule or obligation to be quiet.)

2. You mustn't go near the fireworks. (It is dangerous and forbidden.)

3. You must keep your room clean. (It is good practice and expected.)

4. You mustn't use your mobile phones in the theatre. (It is a rule and disruptive.)

5. You mustn't feed animals at the zoo. It's dangerous. (It is forbidden and potentially harmful.)

6. You must listen to your parents. (It is generally advisable and expected.)

7. You must see the new Spiderman film. It's great! (This is a strong recommendation.)