Fill in all the gaps with 'must/mustn't' or 'not have to'. Press "Check" to check your answers. Use the "Hint" button to get a free letter. You will lose points if you use hints!
1. She pay for a bus ticket. She's only a baby.
2. He see a doctor urgently. He looks terrible.
3. You smoke here. It's a hospital.
4. Rebecca tidy her bedroom. Mum's already done it for her.
5. You see that film. It's fantastic!
6. The children play football in the classroom. It's not allowed.
7. You pick your nose. That's terrible!
8. Peter wear a uniform at school. He can wear casual clothes.
9. You tell me the truth if you want me to believe you.
10. There's no hurry. We leave until half past two. It's only one o'clock.