30.That house isn't going to be bought by him.

31.3 hostages have been kept by this terrorist for a week.

32.It is years since he last saw you.

33.The passage will be read by the examiner 3 times.

34.The town was destroyed by an earthquake.

35.The letter wasn't typed by him last night.

36.I will be picked up at my house.

37.Where was he seen by you in that bank?

38.The keys were returned to me by a man.

39.Mary's friends will be seen off at the station by her.

40.That buiding has to be pulled down.

41.I was given a knife to cut this bread.

42.Beer used to be drunk in England.

43.3 shirts can be sewed by her a day.

44.This room hasn't been used for ages.

45.An article is being translated into Vietnam by me.

46.I am being followed.

47.Our students will be assigned to different jobs by the State .

48.The letter was read again and again by her last night.

49.They have never written to us about this before.

30. That house isn't going to be bought by him

31. 3 hostages have been kept by the terrorist for a week

32. you haven't been seen by him for years

33. The passage will be read 3 times by the examiner

34. The town has destroyed by an earthquake 

35. The letter was not typed by him last night

36. I will be pick up at may house

37. When was he seenin that bank by you?

38 The keys were returned to me buy a man

39. Mary's friend will be seen off the station

40. That bulding has to be pulled down

41. I was give a knife to cut this bread

42. Beer used to be drank in Ègland by them

43. 3 shirts can be sewed a day

44. This room hasn't been used for ages

45 An acticle is being translated in to Vietnamese by me

46. I am being followed

47. Our the students will be assigned to different jobs by the State

48. The letter wass read again and again by her last night

49. This is the first time we have been written to about this