Change the following sentences in passive voice 

( use : S + tobe + V(pp) + to + V
                                      + to + be + V_ing 
                                      + to + have + V( pp ) 

1. People think that the prisoner esscaped by climbing over the wall  
2. People believe that 13 is an unlucky number
3. They rumoured the man was still living 
4. They de lared that she won the competition
5. They know that English is an international language 
6. People think that Jack London's life and writing represent the American love of adventure
7. They say that John is the brightest student in class
8. They reported that the President had suffered a hear a heart attack
9. They think that he has died a natural death
10. They reported that the troops were coming 
11. People belived that the earth stood still
12. It was belived that the fire was caused by a short circuit in the lift machinery
13. It was decided that their marriage would be organised in December
14. People know that she is a good swimmer 
15. They say that Francis is in hospital 
16. They think that the child ren are in the bed 
17. People belived that the robber has worked in the bank
18. People belived that nuclear power stations are dangerous
19. His colleagues thought that he was on holiday 
20. People know that cars pollute the environment 
21. They suppose that the new product will come out soon
22. They found that the mission was impossible
23. They belive that she will win a gold medal 
24. We know that the expedition reached the South Pole in May 
25. People belived the company is losing a lot of money 
26. It was happy to visit his relatives
27. It is easy to do this exercise
28. It will be thring to pass Hai Van tunnel
29. It was fantastic to enjoy games in Suoi Tien
30. It will be important to learn irregular verbs by heart 
31. It will be delicious to eat this fish
32. It is charitable to help the poor
33. I had my nephew paint the gate last week 
34. They have her tell the story again
35. Rick will have a barber cut his hair
36. It will get the dressmaker to make a new dress
37. She often gets the technician to maintain the heater
38. They had the police arrest the shoplifter
39. I must have the dentist check my teeth
40. She will have a veterinary suirgeon examine her dog
41. We had a man take this photograph when we were on holiday last summer
42. Open the door, please ! 

change the following sentences in pasive voice 
1. They were painting a house 
2. She is watering those flowers 
3. We had finished our reports in three months 
4. He ought to sell that car 
5. We have seen her at the station 
6. The librarian will give students the books 
7. He showed me the way to Thames River 
8. He was learning in his room ay 8.30 yesterday
9. You can buy me an envelope
10. We have just bought a car 
11. They visited the church two years ago 
12. Mrs.Green is cooking the food in the kitchen
13. I can't do these exercises quickly 
14. She had finished the reprt by noon
15. The movie has disappointed us very much 
16. They have to pay the bill before the first of the month 
17. Must we finish the test before ten ?
18. How do people make candles  ?
19. Where will your company send you next year ?
20. Has he slept this word wrongly ?
21. Há anyone ever asked you for your opinion ?
22. Did her story take them in ?
23. Should they help Jane with the sewing ?
24. Do you solve this problem ? 
25. Did your mother make some cakes ?
26. When have you done these exercises ?
27. Who gave you this knife ?
28. What did you do last night ?
29. He used to cut grasses in the morning