题目内容
There is no doubt _____ man will conquer nature some day.
A. whether B. have been C. which D. that
D
that 引导的是同位语从句,表示doubt的内容。
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题目内容
There is no doubt _____ man will conquer nature some day.
A. whether B. have been C. which D. that
D
that 引导的是同位语从句,表示doubt的内容。