4) complete the sentences with mustn’t or needn’t 1. i …do homework today. i haven’t got any. 2. we …bring pets to school. 3. you …walk or run in the classroom.

1.needn't
2.musn't
3.musn't

 1.I have to do your homework now. I do not have any.2. We should not bring pets to school.3. You have to walk or run in the classroom.