Our maths teacher set so difficult an examination problem none of us worked out.A. whichB

发布时间：2020-08-17 03:30:50

Our maths teacher set so difficult an examination problem      none of us worked out.
A. which
B. that
C. as
D. so that

网友回答

A. which
B. that
(答案→)C. as
D. so that
解析：句意：我们的数学老师出了一个这么难的考试题，我们中没人能做出这个题来。这里是定语从句，so……as，as引导的是定语从句，as在从句中宾语，故选C。
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