Circle the correct answers. (Khoanh vào đáp án đúng) 1. You must / mustn't finish your breakfast or you'll be hungry later. 2. I must / mustn't leave before 8.30 or l'Il be late for school. 3. You must / mustn't eat that bread. It's a week old! 4. In football, you must / mustn't touch the ball with your hand. 5. You must / mustn't visit Paris some time. It's a wonderful city. 6. You must / mustn't go near the edge of the cliff. It's very dangerous.