Объяснение:
1) you must stop at the red light
2) pilots have to wear a uniform
3) you needn't water the plants. I'll do that
4) he is ill. He must see a doctor
5) you mustn't eat in the classroom. It isn't allowed
6) he has to do his homework every day
7) need I finish it today?
8) you needn't wear a sweater. It's warm outside
9) you mustn't be late It's an important meeting
10) he can go out but he has to be back by 10:00
