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I don’t know ___________ the question.


  1. A.
    what to answer
  2. B.
    how to answer
  3. C.
    to answer what
  4. D.
    to answer how
B
本题考查“疑问词+不定式”结构的用法,这种结构可在句子中作主语、宾语、表语等。
这种结构中,疑问代词须接及物动词或相当于及物动词的短语(who, which除外),如:【误】 I don’t know what to talk.【正】 I don’t know what to talk about.但可以说:We haven’t decided who (which) to go. 我们还没定谁(哪个)去。
这种结构中的疑问副词后要接不及物动词;若接及物动词, 要有动词的宾语。如:I don’t know how to talk. 我不知如何谈。I wonder if you could tell me how to do it. 不知您能否告诉我如何去做这件事。(不能说: ... how to do.)
本题空格后已有宾语the question,故不能选A,只能选B。
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