1) You (must/mustn't)go to bed very late
2)You(must/mustn't) sleep at the lesson
3)You(must/mustn't) shout at friends
4)You(must/mustn't)look after your pet
5)You(must/mustn't) help people
6)You(must/mustn't) eat ice-cream in a shop
7)You(must/mustn't) tidy your room
1. mustn't
2/ mustn't
3/mustn't
4/must
5/ must
6/ mustn't
7/ must
Объяснение:
1. mustn't
2. mustn't
3. mustn't
4. must
5. must
6. mustn't
7. must