D Underline the correct item. e.g. You must/mustn't talk during the test. It's against the rules. 21 You must/can't pay your rent. That's the rule. 22 You must/mustn't eat in the classroom. It's forbidden. 23 You must/can't have any pets in this house. It's not allowed. 24 You must/mustn't go to the doctor. You look very ill. 25 You must/can't go to school. That's the law.

D. Underline the correct item:

1. e.g. You mustn't talk during the test. It's against the rules.
2. 21 You must/can't pay your rent. That's the rule.
3. 22 You mustn't eat in the classroom. It's forbidden.
4. 23 You can't have any pets in this house. It's not allowed.
5. 24 You must/mustn't go to the doctor. You look very ill.
6. 25 You mustn't/can't go to school. That's the law.