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I. Put the following into the passive voice.
13. People speak English in almost every corner of the world.
14. You mustn’t use this machine after 5:30 p.m.
15. Luckily for me, they didn’t call my name.
16. After class, one of t students always erases the chalk board.
17. You must clean the wall before you paint it.
18. They told the new pupil where to sit.
19. I knew that they had told him of the meeting
20. Nobody has ever treated me with such kindness. 21. No one believes his story.
22. A sudden increase in water pressure may break the dam.
23. We must take good care of books borrowed from the library.
24. A man I know told me about it.
25. We can never find him at home for he is always on the move.
26. They use milk for making butter and cheese.
27. Science and Technology have completely changed human life.
28. John used to visit Mr. Cole at weekends.
29. Weeds cover the river bank.
30. Smoke filled the room.
=>
13. English is spoken in almost every corner of the world.
14. This machine mustn’t be used after 5:30 pm.
15. Luckily for me, my name wasn’t called.
16. The chalk board is always erased by one of students after class.
17. The wall must be cleaned before it is painted.
18. The new pupil was told where to sit.
19. I knew that he had been told of the meeting.
20. I have never been treated with such kindness.
21. His story isn’t believed.
22. The dam may be broken by a sudden increase in water pressure.
23. Books borrowed from the library must be taken good care of.
24. I was told about it by a man I know.
25. He can never be found at home for he is always on the move.
26. Milk is used for making butter and cheese.
27. Human life has been completely changed by science and technology.
28. Mr.Cole used to be visited by John at weekends.
29. The river bank is covered by weeds.
30. The room was filled with smoke.