Look at the library rules. Choose the correct option and complete the sentences

1. You
   [must | mustn't][ ] any noise.
2. You
   [must|mustn't][ ] quiet.
3. You
   [must|mustn't][ ] or drink.
4. You
   [must|mustn't][ ] careful with the books.
5. You
   [must|mustn't][ ] books on the table when you leave.
6. You
   [must|mustn't][ ] the books back in the right place.