V. Fill in the blanks with mustn't or don't/ doesn't have to.
Ex Cars musta't park in front of the entrance.
1. They............ work on Saturday.
2. Visitors......
feed the animal.
3. Tim.........
4. You
5. Don't make so much noise. We
6. There's a lift in the building, so I
7. Staff. .......... smoke when serving customers.
work.
wear uniform at school.
touch that switch. It's very dangerous.
wake the baby.
...............climb the stairs.
8. Sally is extremely rich. She
9. I don't want anyone to know about our plan. You
be a good player to enjoy a game of tennis.
tell anyone.