Сomplete the sentences with 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 [have to|don't have to|mustn't]touch those insects. They can sting you.
2. You [have to|don't have to|mustn't]go if you are too busy. We can go on our own.
3. The concert is free. We [have to|don't have to|mustn't] pay.
4. It's late. They [have to|don't have to|mustn't]leave now.
5. Ted and Mike [have to|don't have to|mustn't]take the train to school. It's pretty far to walk.
6. In some countries you [have to|don't have to|mustn't]drive on the left.
7. People [have to|don't have to|mustn't]be very tall to play curling.