Помогите Пожалуйста))* Choose the correct answer.1) I must/mustn039;t lose weight.

Помогите Пожалуйста))* Choose the correct answer.
1) I must/mustn't lose weight. I'm too fat.
2) I must/mustn't be late for the school.
3) The kids must/mustn't sleep regularly to grow healthily.
4) I must/mustn't finish my homework.
5) We must/mustn't obey the rules to live in pease.
6) I must/mustn't come home before ten o'clock.
7) We must/mustn't be guiet in the classroom.
8) We must/mustn't shout in the classroom.
9) We must/mustn't be careful while we are walking on the street.