51. Government reports, examination compositions, legal documents and most business letters are the main situations ______ formal language is used. 
A. in which B. at what C. on which D. in that

52. How is it _____ your roommate’s request and yours are identical? 
     A. if        B. so
     C. what       D. that

53. These people once had fame and fortune; now _____ is left to them is utter poverty.
     A. all that      B. all what
     C. all which      D. that all

54. _______ much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in the realm of assumption.
    A. Because           B. For              C. Since                D. While

55. They always give the vacant seats to _______ comes first. 
    A. whoever          B. whomever         C. who               D. whom

28. The woman ______ we gave the check has left. 
A. whoever B. to whom C. with whom D. whether
56. It wasn’t such a desirable air conditioner ______ the advertisement had promised us. 
A. as B. when C. what D. which

57. ______ David loves his daughters, he is strict with them. 
A. If B. Although C. When D. For

58. Professor Knight, _____ list of achievements includes two Nobel Prizes, will address the meeting tonight. 
A. who    B. that    C. whose    D. whom

59. She is pleased with what you have given him and _____ you have told him. 
  A. that    B. which   C. all what    D. all that

60. The local textile mill has 800 workers, _____ 700 are women. 
  A. whose    B. whom    C. of whom   D. of which

61. He has made another wonderful discovery, _____ of great importance to science. 
  A. which I think is       B. in which I think it is
  C. which I think it is       D. of which I think it is

62. It is because she is too inexperienced _____ she does not know how to deal with the situation. 
A. so     B. that    C. so that    D. which

63. "Let's start our meeting immediately _____ everyone has arrived." the chairman said. 
A. although B. until
C. after D. now that

64. _____ your role is, knowing who you are and what you' re good at is critical for success.
A. Whatever B. Whichever
C. Whoever D. Whomever

65. _____ he was an old customer, the boss allowed ten per cent discount off the prices of the goods. 
A. Give that B. Giving that
C. To give that D. Given that

66. Advertising is distinguished from other forms of communication _____ the advertiser pays for the message to be delivered. 
A. in that                           B. in which
C. in order that                       D. in the way

67. Although _____ happened in that developed country sounds like science fiction, it could occur elsewhere in the world.
A. this                              B. that
C. which                            D. what

68. It had been years _____ I visited my hometown and I was determined to enjoy my stay. 
A. after                            B. when
C. since                            D. that

69. Scientists say it may be five or ten years _____ it is possible to test this medicine on human patients. 
A. when                              B. after
C. before                              D. since

70. Most of his great novels and plays were not published or known to the public _____ his tragic death in 1786. 
A. even before   B. ever since  C. until after    D. until before

71. This book will show you _____ can be used in other contexts. 
A. how what you've observed   B. how you've observed
C. that you've observed     D. the thing what you've observed

72. The science of medicine, _____ we owe a great deal, is perhaps the most important of all the sciences. 
A. in which   B. to which  C. at which    D. for which

73. I always keep candles in the house ______ there is a power cut. 
A. if                             B. incase
C. on condition that                  D. when

74. The professor can hardly find sufficient grounds       his argument in favor of the new theory. 
A. which to base on                B. on which to base
C. to base on which                  D. which to be based on

75. ______ you didn’t know the rules won’t be a sufficient excuse for your failure to report.
A. What B. Whether C. That D. Which
76. My major is accounting so I want a job ______ I have more responsibilities for money.
A. which B. that C. what D. where

77. Unfortunately, it was after two o’clock in the morning ______ he arrived at a solution.
A. when B. that C. after D. until

78. Man has used metals for centuries in gradually increasing quantities but it was ______ the Industrial Revolution that they came to be employed in really vast quantities. 
A. till B. until C. not until D. not till

79. His brother had become a financier, ______ he wanted to be. 
A. who B. what C. which D. that

80. ______ is generally accepted, economical growth is determined by the smooth development of production.
A. What B. That C. It D. As

81. The social Security Retirement program is made up of two trust funds, ______ could go penniless by next year. 
A. the larger one B. the larger of which
C. the largest one D. the largest of which

82. Radio, television and press ______ of conveying news and information. 
A. are the most three common means B. are the most common three means
C. are the three most common means D. are three the most common means

83. Today, ______ major new products without conducting elaborate market research. 
A. corporations hardly introduce ever B. corporations hardly ever introduce
C. hardly corporations introduce ever D. hardly corporations ever introduce

84. I’ve already told you that I’m going to buy it, ______. 
A. however much it costs B. however does it costs much
C. how much does it cost D. no matter how it costs