They were surprised that a child should work out the problem ________ they themselves couldn't.
They were surprised that a child should work out the problem ________ they themselves couldn't.
A.once B.then C.while D.if
A.once B.then C.while D.if
英语人气：132 ℃时间：2019-10-19 00:30:00
优质解答
答案C 【巧解导析】此题是由两个分句组成的并列句．根据句意,分句之间表转折关系,四个选项中只有while是并列连词,含义为“而,却”． 查看原帖>>
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