Bài tập về Động từ khuyết thiếu trong câu bị động Tiếng anh lớp 8

PASSIVE VOICE – MODAL VERBS 
1. You must take off your shoes. 
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2. He shouldn’t smoke cigarettes in this room. 
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3. We could see Tom in the crowd. 
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4. Eddie might help you if you ask him. 
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5. We can order some lemonade at the bar. 
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6. We have to protect our sea. 
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7. They ought to park the car in the right place. 
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8. You should speak English in class. 
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9. Mary used to keep a dog. 
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10. People would buy tickets at this booth. 
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11. They can book rooms in advance. 
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12. We may borrow his car for a day. 
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Modal + be + past participle