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— No one can answer the question _______ we can complete the task in time, do you know?
— Yes, and this is because we don’t know the way _______ the scientist used last time.
A.whether; whichB.if; which
C.whether; in whichD.if; in which
A
第一空考查同位语从句,说明the question的内容,用whether引导,不能用if,第二空是定语从句,the way做先行词,但定语从句中缺少宾语,用which引导定语从句。选A。
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