Complete the sentences with must or mustnt. You brush your teeth three times a day. You forget to do your homework regularly. You be nice to your classmates. You wear warm cothes when it is cold outside. You chew gum in class. You study hard if you want to pass your exams. You fight with your classmates. You play football in the classroom. You listen to your teacher very carefully. You forget your best friends birthday. You be rude to your grandparents. You go to the dentists twice a year. You stay in bed when you are ill. You feed zoo animals. You do your online exercises.встав те плизпомогите и не писать делай сам и т.п.

1. must brush
2. mustnt forget
3. must be nice
4. must wear
5. mustnt chew
6. must study
7. mustnt fight
8. mustnt play
9. must listen
10. mustnt forget
11. mustnt be rude
12. must go
13. must stay
14. mustnt feed
15. must do