题目内容

-I’m disappointed to see we are in a dilemma about this matter.

-We can turn to professor Wang; he knows _________.


  1. A.
    how
  2. B.
    how to
  3. C.
    how to deal
  4. D.
    what to deal
C
此答语不可省略,因为与上一句没有重复。
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