Question

Complete the sentences with must or mustn't.

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 friend's birthday.
You              be rude to your grandparents.
You              go to the dentist's twice a year.
You              stay in bed when you are ill.
You            feed zoo animals.
You            do your online exercises.
встав те плиз
помогите и не писать делай сам и т.п. 

Answer 1

1. must brush
2. mustn't forget
3. must be nice
4. must wear
5. mustn't chew
6. must study
7. mustn't fight
8. mustn't play
9. must listen
10. mustn't forget
11. mustn't be rude
12. must go
13. must stay
14. mustn't feed
15. must do