-I’m disappointed to see we are in a dilemma about this matter． -We can turn to
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－I’m disappointed to see we are in a dilemma about this matter．
－We can turn to professor Wang; he knows _________．
[]A．how
B．how to
C．how to deal
D．what to deal
试题答案
答案：C
解析：此答语不可省略，因为与上一句没有重复。