7 Mustn't or don't/doesn't have to? That is the question.

1. You don't have to do the whole test. You can only do the listening. 2. Mum doesn't have to cook tonight. We're going to the restaurant. 3. You don't have to be late for the exam. They won't let you in. 4. You mustn't tell anyone. It's a secret! 5. You don't have to stay till the end. You can leave if you don't like it. 6. You don't have to pay there. This exhibition is free. 7. You mustn't borrow this book from me, but you mustn't lose it - it's a book from the library. 8. Natasha doesn't have to attend classes. She is preparing for the Olympiad.