1. Поставьте must или mustn’t.
1. You look pale. I think you … see the doctor.
2. It’s very slippery outside. You … run there.
3. You … throw litter on the pavement.
4. Children … look neat and clean at school.
5. You … make noise in the library.
6. You … brush your teeth before going to bed.
7. You … fasten your seatbelt in a car.
8. Children … watch TV a lot.
9. You … light a fire in the forest.
10. You … be friendly to other people.