⦁ Complete the sentences with must or mustn’t
⦁ 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 chew gum in class.
1. mustn't
2. must
3.mustn't
4.mustn't
5. must
6. must
7.mustn't
8. mustn't
Объяснение: