must / mustn`t

Complete with ‘must’ or ‘mustn’t’.

1. Teenagers … spend long hours at the computer.

Complete with ‘must’ or ‘mustn’t’.

2. Teenagers … do their homework on time.

Complete with ‘must’ or ‘mustn’t’.

3. Teenagers … smoke or drink acohol.

Complete with ‘must’ or ‘mustn’t’.

4. Teenagers … learn to be kind to others.

Complete with ‘must’ or ‘mustn’t’.

5. Teenagers … look neat and tidy.

Complete with ‘must’ or ‘mustn’t’.

6. Teenagers … be rude.

Complete with ‘must’ or ‘mustn’t’.

7. Teenagers … skip breakfast.

Complete with ‘must’ or ‘mustn’t’.

8. Teenagers … use their mobile phones in schools.

Complete with ‘must’ or ‘mustn’t’.

9. Teenagers … do their homework.

Complete with ‘must’ or ‘mustn’t’.

9. Teenagers … bring pets to school.