Complete the rules with must (✓) or mustn't (x).

Rules:

1. You mustn't listen to music in here. (x)
2. You must be 1.3 m tall to go on this ride. (✓)
3. You must wear a jacket. (✓)
4. You mustn't eat sweets in the cinema. (x)
5. You mustn't use your phone in class. (x)
6. You must phone your parents! (✓)