1,He must go to school today.
2,I must have left my mobile at home.
3,She told me I must be there on time.
4.It must be Mr Smith.
5.I must talk to Mary.
6.He must be careful: the fish with teeth is dangerous.
7.You must do that.
1.You mustn't park here.
2.She mustn't talk to strangers.
3.She mustn't go out
4.They mustn't be allowed to get away with it.
5.you musn't drink coffy every morning.
6. I musn't go to primary school today.
7. We musn't clean teeth every day.