Fill in the blanks with mustn't or don't / doesn't have to: They........work on Sunday. Visitors..........feed the animal.

Fill in the blanks with mustn't or don't / doesn't have to:

1. They--work on Sunday.

2. Visitors--..feed the animal.

3. Tim--...wear uniform at school.

4. Don't make so much noise. We--.wake the baby.

5. There is a lift in the building, so I--.climb the stairs.

6. You--..touch that switch. It's very dangerous.

7. Staff-...smoke when serving customers.

8. Sally is extremly rich. She--..work.

9. I don't want anybody to know our plan. You=tell anymore.

10. You--.be a good player to enjoy a game of tennis.

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