Fill "must / mustn't / have to/don't have to/should / shouldn't" in the blanks. 1. It's 10 p.m. I __ go home now. 2. Students __ wear uniforms on weekdays at school. 3.I __ be back home by 9 p.m . My parents let me decide what to do. 4.I think we __ stay out too late at night It's dangerous. 5. In Vietnam ,all people __ drive on the right. The end

Here are the answers with explanations:<br /><br />1. **It's 10 p.m. I **must** go home now.** <br /> * **Must** expresses a strong obligation or necessity. It's late, so you need to go home.<br /><br />2. **Students **must** wear uniforms on weekdays at school.**<br /> * **Must** indicates a rule or requirement. School uniforms are mandatory.<br /><br />3. **I **don't have to** be back home by 9 p.m. My parents let me decide what to do.**<br /> * **Don't have to** means there is no obligation. Your parents have given you freedom.<br /><br />4. **I think we **shouldn't** stay out too late at night. It's dangerous.**<br /> * **Shouldn't** expresses a suggestion or advice. It's not a rule, but it's safer to go home earlier.<br /><br />5. **In Vietnam, all people **must** drive on the right.**<br /> * **Must** indicates a law or regulation. Driving on the right is a legal requirement in Vietnam. <br />