问题描述：
问一道高三英语单选题?
Our teacher set us such a difficult maths problem ( ) we couldn't work out.
A.as B.that
为什么选A不选B呢,不是such.that.(如此...
Our teacher set us such a difficult maths problem ( ) we couldn't work out.
A.as B.that
为什么选A不选B呢,不是such.that.(如此...
问题解答：
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