选词填空：
Directions: There are 20 blanks in the following passage, For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the one that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center.

Methods of studying vary; what works__71__ for some students doesn’t work at all for others. The only thing you can do is experiment __72__ you find a system that does work for you. But two things are sure: __73__ else can do your studying for you, and unless you do find a system that works, you won' t although college. Meantime, there are a few rules that__74__ for everybody. The hint is "don't get ___75___ ".

The problem of studying, __76__ enough to start with, becomes almost__77__ when you are trying to do __78__ in one weekend.

__79__ the fastest readers have trouble __80__ that. And if you are behind in written work that must be __81__, the teacher who accepts it __82__late will probably not give you good credit. Perhaps he may not accept it__83__ . Getting behind in one class because you are spending so much time on another is really no __84__. Feeling pretty virtuous about the seven hours you 'spend on chemistry won' t __85__one bit if the history teacher pops a quiz. And many freshmen do get into trouble by spending too much time on one class at the __86__of the others, either because they like one class much better or because they find it so much harder that they think, they should __87__all their time to it. __88__the reason, going the whole work for one class and neglecting the rest of them is a mistake, if you face this __89__, begin with the shortest and easiest __90__. Get them out of the way and then go to the more difficult, time consuming work.

71. A) good B) easily C) sufficiently D) well

72. A) until B) after C) while D ) so

73. A) somebody B) nobody C) everybody D) anybody

74. A) follow B) go C) operate D) work

75. A) behind B) after C) slow D) later

76. A) hardly B) unpleasant C) hard D) heavy

77. A) improbable B) necessary C) impossible D) inevitable

78. A) three week's work B) three weeks' works

C) three weeks' work D) three week' s works

79. A) Even B) Almost C) If D) with

80. A) to do B) doing C) at doing D) with doing

81. A) turned in B) tuned up C) turned out D) given in

82. A) very B) quite C) such D) that

83. A) anyway B) either C) at all D) too

84. A) solution B) method C) answer D) excuse

85. A) help B) encourage C) assist D) improve

86. A) expense B) pay C) debt D) charge

87. A) devote B) put C) spend D) take

88. A) Whichever B) Whatever C) However D) Wherever

89. A) attraction B) decision C) temptation D) dilemma

90. A) arrangements B) way C) assignments D) class