英语语法达人请进，左边是正确答案，横线上的是我错选的答案，请给出具体原因，以题号为准 ，不胜感激流涕

Question

C3. The school board listened quietly as John read the demands that his followers ____B____ for.
[A] be demonstrating
[B] demonstrate
[C] had been demonstrating
[D] have demonstrated
C4. Ted has told me that he always escapes ____B____ as he has got a very fast sports car.
[A] to fine
[B] to be fined
[C] being fined
[D] having been fined
D6. Prof. Lee’s book will show you ____C____ can be used in other contexts.
[A] that you have observed
[B] that how you have observed
[C] how that you have observed
[D] how what you have observed
B10. Experts say walking is one of the best ways for a person to ____C____ healthy.
[A] preserve
[B] stay
[C] maintain
[D] reserve
D15. A really powerful speaker can ____C____ the feelings of the audience to the fever of excitement.
[A] work out
[B] work over
[C] work at
[D] work up
A16. Before the students set off, they spent much time setting a limit ____C____ the expenses of the trip.
[A] to
[B] about
[C] in
[D] for
B17. According to the psychoanalyst Sigmund Freud, wisdom comes from the ____C____ of maturity.
[A] fulfillment
[B] achievement
[C] establishment
[D] accomplishment
A18. From the tears in Nedra’s eyes we can deduce that something sad ____C____.
[A] must have occurred
[B] would have occurred
[C] might be occurring
[D] should occur
D20. Hardly a month goes by without ______B__ of another survey revealing new depths of scientific illiteracy among U.S. citizens.
[A] words
[B] a word
[C] the word
[D] word
D24. There is no reason they should limit how much vitamin you take, _____B___ they can limit how much water you drink.
[A] much more than
[B] no more than
[C] no less than
[D] any more than
A25. Though ____B____ in San Francisco, Dave Mitchell had always preferred to record the plain facts of small-town life.
[A] raised
[B] grown
[C] developed
[D] cultivated

B26. Most electronic devices of this kind, _____C___ manufactured for such purposes, are tightly packed.
[A] that are
[B] as are
[C] which is
[D] it is
A27. As for the winter, it is inconvenient to be cold, with most of ___D_____ furnace fuel is allowed saved for the dawn.
[A] what
[B] that
[C] which
[D] such

Answer 1

C3. The school board listened quietly as John read the demands that his followers ____B____ for.
[A] be demonstrating
[B] demonstrate
[C] had been demonstrating
[D] have demonstrated
John读demands是过去时，他的跟随者证明这些demands要比John先一个时态，所以是过去完成时。
C4. Ted has told me that he always escapes ____B____ as he has got a very fast sports car.
[A] to fine
[B] to be fined
[C] being fined
escape doing sth. 逃脱做某事
D6. Prof. Lee’s book will show you ____C____ can be used in other contexts.
[A] that you have observed
[B] that how you have observed
[C] how that you have observed
[D] how what you have observed
what you have observed指代一个名词，一个事物，用that就变成从句了，而这个从句又没有先行词，所以不成立。”这本书会告诉你如何把你所观察到的东西运用在其他地方。“
B10. Experts say walking is one of the best ways for a person to ____C____ healthy.
[A] preserve
[B] stay
stay healthy 保持健康，有点固定搭配吧。
D15. A really powerful speaker can ____C____ the feelings of the audience to the fever of excitement.
[A] work out
[B] work over
[C] work at
[D] work up
真正有感染力的演讲家会把观众的感情”激发“成什么什么。纯粹考词组意思。
A16. Before the students set off, they spent much time setting a limit ____C____ the expenses of the trip.
[A] to
[B] about
[C] in
[D] for
set a limit to / set limits to 对…加以限制
B17. According to the psychoanalyst Sigmund Freud, wisdom comes from the ____C____ of maturity.
[A] fulfillment
[B] achievement
[C] establishment
[D] accomplishment
大概是弗洛伊德的名句本身就用这个词吧。。。智慧源于成熟。
A18. From the tears in Nedra’s eyes we can deduce that something sad ____C____.
[A] must have occurred
[B] would have occurred
[C] might be occurring
[D] should occur
从他的眼泪我们可以推断出，一定发生了些悲伤的事。A更符合这个语言环境。
D20. Hardly a month goes by without ______B__ of another survey revealing new depths of scientific illiteracy among U.S. citizens.
[A] words
[B] a word
[C] the word
[D] word
美国公民科学知识匮乏的现象日益严重，这种调查报告几乎月月都有。双重否定。我也不知道为什么。。反正用word就行了。。。
D24. There is no reason they should limit how much vitamin you take, _____B___ they can limit how much water you drink.
[A] much more than
[B] no more than
[C] no less than
[D] any more than
他们没有理由限制你服用多少维生素，就像他们不能限制你喝多少水一样。（any more than实际上是前后两部分进行比较的一种用法）
B26. Most electronic devices of this kind, _____C___ manufactured for such purposes, are tightly packed.
[A] that are
[B] as are
[C] which is
[D] it is
A的话前面不能有逗号，C的话是单数，主语是复数，所以选B...

25、27不知道怎么说，你问问别的老师或同学吧。。。
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谢谢victorcuper的指点~~17、20题我确实不知道这些词的涵义唉，在此学习了！至于18题，我还以为关键是时态呢 ><

Answer 2

苦涩蓝山有一些说的不对。
ta对17题的解释太不负责任了。achieve表示通过一定的努力后获得，在这里意思最准确。
18题，确实是发生了悲伤的事，但这样并没有解答出为什么是A。关键在于，occur是一个瞬间动词i，所以不能用occuring。
20题，苦涩蓝山没说清楚。word在这里是不可数名词，表示言论、消息。
至于ta没有解答的25题和27题：
25：“尽管在旧金山长大”，A选项是被动语态，被抚养大。B不能选，是因为grow up才是长大，grow不是，而且grow是主动语态。
27题，我强烈怀疑你抄错题了。不管按照你的答案还是参考答案都解释不通。麻烦你再看看。本回答被网友采纳