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

　　其他部分 (情态动词＋平行结构＋句型)
　　1. Some women ______ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.
　　A. must make  B. should have made
　　C. would make  D. could have made
　　2. You ______ him so closely; you should have kept your distance.
　　A. shouldn’t follow B. couldn’t have been following
　　C. mustn’t follow  D. shouldn’t have been following
　　3. As teachers we should concern ourselves with what is said, not what we think ______.
　　A. ought to be said  B. must say
　　C. have to be said  D. need to say
　　4. This box is too heavy, ______ give me a hand?
　　A. would you mind  B. would you please
　　C. will you like to  D. will you please to
　　5. John seems a nice person. ______, I don’t trust him.
　　A. Even though B. Even so C. Therefore D. Though
　　6. Investigators agreed that passengers on the airliner _____ at the very moment of crash.
　　A. should have died    B. must be dying
　　C. must have died        D. ought to die
　　7. While crossing the mountain area, all the men carried guns lest they         by wild animals.
　　A. should be attacked                      C. must be attacked
　　B. had been attacked                       D. would be attacked
　　8. He said that the driver must have had an accident; otherwise he _______ by then.
　　A. would have arrived                        C. should arrive
　　B. must have arrived                         D. would arrive
　　9. You should not have driven that car with its brakes out of order. You _____ a serious   accident.
　　A. might have   B. might have had  C. should have  D. should have had
　　10. He is an hour late. He _____ by fog. Of course, that's only a possibility.
　　A. may have been delayed    B. should have been delayed
　　C. can have been delayed    D. must have been delayed
　　11. You _____ all the way to meet me here, I know this place pretty well.
　　A. don' t need to come                B. needn’t come
　　C. didn’t need to come                D. needn’t have come