Uzupełnij mustn't lub don't have to.

1. I --- don't have to mustn't smoke at school.

 
2. I --- don't have to mustn't wear a uniform.

 
3. I --- don't have to mustn't use my mobile phone at the classroom.

 
4. I --- don't have to mustn't pay for lessons.

 
5. We --- don't have to mustn't clean the classroom after school. Our school has cleaners.

 
6. We --- don't have to mustn't talk during classes.