Must/ Mustn’t

1. This is important. You ____ listen carefully.

2. You _____ drop litter.

3. The cars go very fats. We _____ be careful.

4. There is an intersection ahead. We ________ go fast.

5. You _____ touch the snakes.

6. This sign says “Stop”. We _____ go straight on.

7. You ______ use your mobile phone in the exam room.

8. You ______ drive you car carefully.

9. The traffic lights are red. You ____ stop.

10. Our roads are dangerous places. We ______ have discipline.