Chuyển sang câu bị động các câu sau:
1.Our English teacher may give an exam to day.
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2.You may forget the rules quickly.
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3.Janet used to study the lessons repeatedly.
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4.Ben must win the competition.
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5.The doctor can't persuade her.
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6.The students have to learn History.
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7.Tom must open the window.
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8.How can we solve that problem?
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9.You must not touch this button during the experiment.
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10.We should call the police at once after the accident.
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11. You shouldn't make fun of the poor.
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12.My sister used to open a shop 3 years ago.
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13.We have to end this quarred.
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14.You ought to help her.
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15.You must keep the secret forever.
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Chuyển sang câu bị động các câu sau:
1. Our English teacher may give an exam to day.
→ The exam may be given by our English teacher today.
2. You may forget the rules quickly.
→ The rules may be forgotten by you quickly.
3. Janet used to study the lessons repeatedly.
→ The lessons used to be studied repeatedly by Janet.
4.Ben must win the competition.
→ The competition must be won by Ben.
5.The doctor can't persuade her.
→ She can't be persuaded by the doctor.
6. The students have to learn History.
→ History has to be learned by the students.
7. Tom must open the window.
→ The window must be opened by Tom.
8. How can we solve that problem?
→ How can that problem be solved by us?
9. You must not touch this button during the experiment.
→ This button must not be touched by you during the experiment.
10. We should call the police at once after the accident.
→ The police should be called at once by us after the accident.
11. You shouldn't make fun of the poor.
→ The poor shouldn't be made fun of by you.
12. My sister used to open a shop 3 years ago.
→ A shop used to be opened by my sister 3 years ago.
13. We have to end this quarrel.
→ This quarrel has to be ended by us.
14. You ought to help her.
→ She ought to be helped by you.
15. You must keep the secret forever.
→ The secret must be kept by you forever.