43. The match was cancelled (by them) because of the rain.
44. This line must not be crossed (by you).
45. The oranges had been picked (by them) before the storm.
46. The book should be written by Professor Smith.
47. The workers will be paid by Mr Elliot.
48. Tom was being followed by two men.
49. The Internet is used by millions of people every day.
50. Bob was given a CD player (by them) for his birthday.
51. The winners will be given a medal by the prime minister.
52. The story is being told to the children.
53. Sally has been offered a job by them.
54. The river has been polluted by poisonous chemicals.
55. She's being examined by Doctor Simms.
56. He must be stopped (by you) now.
57. They were given free tickets for the concert.