Question

Use must or mustn't. 1) You… go out. It is raining. 2) Your room is messy. You... do your room and wash the floor. 3) Bob has a high temperature. He... go to school. 4) Its eleven o'clock Betty… eat much chocolate. 5) You… play in the street. It's dangerous.

Answer 1

1)mustn’t
2)must
3)mustn’t
4)mustn’t
5)mustn’t

Answer 2

Sure, here are the sentences completed with "must" or "mustn't" appropriately:

1. You mustn't go out. It is raining.
2. Your room is messy. You must do your room and wash the floor.
3. Bob has a high temperature. He mustn't go to school.
4. It's eleven o'clock. Betty mustn't eat much chocolate.
5. You mustn't play in the street. It's dangerous.