Chose the correct option.

1. You mustn’t/have to/don’t have to touch that. It’s hot!

2. You  mustn’t/have to/don’t have to   buy the tickets online. There isn’t a phone number.

3. You  mustn’t/have to/don’t have to put the knife in your mouth when you eat. It’s dangerous and rude.

4. It’s OK, you can go. You  mustn’t/have to/don’t have to wait for me – I can come later.

5. Shh! Be quiet! You  mustn’t/have to/don’t have to talk during the exam.​