Choose the correct words to complete the sentences. You don't have to / mustn't help me but you can if you want. 1. When I was younger, I had to / must go to bed at 8 p.m. 2. No ball games, please! You don't have to / mustn't play football here. 3. Do you have to / Must you leave now? It's very early. 4. I don't have to / mustn't wear a swimming cap in my pool, but I usually wear one. 5. Shh! My sister's sleeping! We don't have to / mustn't wake her.

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