Respuesta:
7. I know you don't like supermarkets so you don't have to come if you don't want to.
8. We have to make sure that our hands are very clean.
9. We don't have to go into college today because it's Sunday so it will be closed.
10. You have to be more careful! I don't want you to break it!
11. Do i have to come? I don't really want to their books print in Paris.
