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 ,

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 ,
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

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.
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