Сomplete the sentences with have to, don't have to, don’t have to, or mustn’t
They (don't have to/have to/mustn't) go to school tomorrow. It's a weekend.
1)You ___ touch those insects. They can sting you.
2)You___go if you are too busy. We can go on our own.
3)The concert is free. We___ pay.
4)It's late. They___leave now.
5)Ted and Mike___ take the train to school. It's pretty far to walk.
6)In some countries you___drive on the left.
7)People___be very tall to play curling.