Chuyển các câu sau sang bị động
1. Tom has seen this film before.
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2. Nina has read the newspaper already.
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3. They have seen these movies yet.
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4. I have signed the contract.
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5. Somebody has taken my briefcase.
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6. These men have bought the tickets.
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7. I have bought this teddy bear in that shop.
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8. Vicky has found her hat.
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9. Marry has operated Tom since 10 o’clock.
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10. We have finished the report.
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11. I have done my exercise for three days.
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12. Kerrie has paid the bill.
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13. I have eaten a hamburger.
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14. We have cycled five miles.
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15. I have opened the present.
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16. They have not read the book.
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17. You have not sent the parcel.
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18. We have not agreed to this issue.
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19. Mr. Smith has taught us French for two year
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20. They have not caught the thieves.
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21. Have they noticed us?
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22. A group of students have met their friend at the railway station.
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23. Nancy has paid the bill.
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24. I have opened the present.
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25. They have not read the book.
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26. You have not sent letter.
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27. They have not caught the thieves.
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28. We have done our homework.
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29. My friend has written a emails for 2 hours.
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30. Our teachers have explained the English grammar.
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