III. True or False. Tick the correct box.
1. You must close the door before going out.
2. You mustn’t do your homework.
3. You mustn’t obey your parents.
4. You must go to school on time.
5. You must walk on the grass.
6. You mustn’t shout at me.
7. You must brush your teeth before going to bed.
8. You mustn’t eat fruit and vegetables.
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Sinh Học lớp 12
