Пять предложений с must и пять предложений с mustn't

1.People must take care of nature
2.We must bulid this house by autumn
3.He must be on his way here
4.I must do my homework
5.We must wear our school uniform

1.You mustn`t be late for class
2.She mustn`t forget her books
3.You mustn`t shout in the library
4.We mustn’t run in school. 
5.You mustn`t use computer for more than 6 hours straight.