Câu bị động

Change these sentences into passive voice.
1. The milkman brings bottles of milk to houses.
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2. How do people learn languages ?
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3. John will collect me at the airport.
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4. The manager must sign the cheque.
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5. They kept me waiting for half an hour.
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6. They are building a new ring road round the city.
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7. We can’t wear jeans at work.
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8. Will you invite her to your birthday party ?
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9. They have built a new hospital near the airport.
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10. Do they speak French and English in Canada ?
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11. Someone painted the office last week.
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12. A stranger helped me.
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13. Six countries signed the agreement.
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14. He has to pay the bill.
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15. You ought to send the letter at once.
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16. She came to visit us yesterday.
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17. The teacher is correcting our homework.
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18. Several people saw the accident.
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19. Someone will tell you the truth.
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20. They don’t let children play with matches.
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21. People don’t use this road very often.
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22. We will grow a lot of trees in the parks.
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23. They are painting the living-room light blue.
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24. People have developed many different paper products.
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25. He asked us many difficult questions.
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26. They must widen the road soon.
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27. She advised me to reuse milk bottles.
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28. My sister cleans these rooms every day.
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29. Wastes from chemical factories have caused a lot of pollution.
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30. When does he usually do his homework ?
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31. Clement Clarke Moore wrote the poem “ A visit from Saint Nicholas ’’.
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32. They performed Christmas songs for people in town.
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33. Santa Claus gave children presents on Christmas Eve.
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34. My father decorated the Christmas tree with colored lights.
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35. Miss Thanh taught me to draw the Christmas cards.
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36. Ba invited Liz to the rice-cooking festival.
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37. They held the festival in the communal house yard.
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38. The council leader awarded the first prize to the Mekong team.
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39. They separated the rice from the husk.
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40. How many motorbikes does Viet Nam import a year ?
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41. They made the fire in the traditional way.
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42. You must collect four bottles of water.
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43. Irving Berlin wrote the famous song “ White Christmas ’’.
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44. How do people cook this kind of food ?
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45. The children are redecorating the sitting-room.
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46. Have you tidied the kitchen ?
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47. People didn’t organize this festival some years ago.
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48. When I came, they were pulling down the old theater.
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49. You should open the wine about an hour before you use it.
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50. They have just given the children some gifts.
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