—Noonecananswerthequestionweca

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更新 2022-09-03
科目英语
题型单选题
难度中等
浏览 1877

— 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; which	B．if; which
C．whether; in which	D．if; in which

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