3 Look at the library rules and make sentences with must or mustn't.

3 Look at the library rules and make sentences with must or mustn't.

• You mustn't make any noise.
• You must be quiet.
• You mustn't eat or drink.
• You must be careful with the books.
• You mustn't leave books on the table when you leave.
• You must put the books back in the right place.