Turn the following sentences into the active voice.

1. These exercises were done well.

2. This dress must be washed in cold water.

3. No mistakes have been made in his composition.

4. His painting will be exhibited for the first time by New Arts gallery.

5. This house was built 100 years ago.

6. These artificial flowers are made of silk.

7. The lessons are being written by the students now.

8. This job has to be done at once.

9. These animals at the zoo are fed twice a day.

10. The operation is going to be performed by French doctors.

11. All the arrangements have been made.

12. When was this radio manufactured?

13. They couldn’t be found anywhere.

14. Is mathematics taught in this school?

15. Fortunately the machinery wasn’t damaged by the accident.

16. Please wait here while your luggage is being examined.

17. How are candles made?

18. For a long time the earth was believed to be flat.

19. Were you taught how to apply this theory by your teacher?

20. Apples are said to be good for our health.

21. Don’t let the dog be teased by the children.

22. It is believed that red is the symbol of luck.

23. What have been done to help the poor in this city?

24. The jewelry must have been stolen while she was out.

25. Where did the treasure use to be hidden by pirates in the old time?

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16. After class, one of the 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 My Cole at weekends.

29. Weeds cover the river bank.

30. Smoke filled the room.
 nhờ các bạn làm dùm mình, mình đang cần gấp ạ

11. "Jean, have you seen my gloves?" Thomas asked.

- Thomas asked Jean.....

12. Don't leave the window open, Mary", I said.

- I told Mary.... ...................................................................

13. "I'll have a cup of tea with you," she said.

She said that................................................................

14. "I'll pay him if I can" she said.

- She said that... ...................................................................

15. "What are you going to do next summer?" she asked.

- She asked us.... ...................................................................

16. "I'll phone you tomorrow," he told Jack.

- He told Jack that.... .............................................................

17. "Can I sit beside you, Jean?" Tom asked.

- Tom asked Jean.... ..............................................................

18. "I want a camera for my birthday," he said.

- He said that.... ...................................................................

19. "Don't keep the door locked," he said to us.

- He told us.... ...................................................................

20. "How long are you going to stay?" I asked him.

- I asked him how long....