Grammar 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 25 You must/can't go to school. That's the

Grammar D: Underline the correct item

• 21. You must pay your rent. That's the rule. (Paying rent is an obligation.)
• 22. You mustn't eat in the classroom. It's forbidden. (Eating in the classroom is prohibited.)
• 23. You can't have any pets in this house. It's not allowed. (This indicates a lack of permission or ability to have pets.)
• 24. You mustn't go to the doctor. (Assuming this is advice against going unnecessarily, or a prohibition.)
• 25. You can't go to school. That's the (This implies an inability to go to school, perhaps due to illness or other circumstances.)