Why did they keep trying _________ they must have known it was hopeless?A．ifB．be - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Why did they keep trying _________ they must have known it was hopeless?

A．if

B．because

C．when

D．whether

答案

解析

这题考查连词的用法，when表示“既然”句意是：既然他们已经知道是无望了，为什么还要一直尝试呢？选C。

核心考点

试题【Why did they keep trying _________ they must have known it was hopeless?A．ifB．be】；主要考察你对连词等知识点的理解。[详细]

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