62.He is a man who is alwaysfault with other people.

63.The new buyer identified a dozen new sources for the material, proved to be reliable.

62.The person I trust most is a friendI have been cooperating in business for a long time.

61.Researchers have spent five years collecting datathe study was based.

60.I still remember the daywe first met, during my first visit to the town.

59.The first thingI wanted to do after the exam was totravel around theworld.

58.The reasonhe refused our invitation was that he had to prepare for an exam.

57.This is the very bookbelongs to him.

56.Which is the bookyou bought yesterday?

55.That＇s the doctoron the seriously wounded man.

54.There are two major problems linked with nuclear power plants, the first concerns nucleawaste.