They overcame all the difficulties and fulfilled the plan three months ahead of time, ______is something we had not expected.

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问题 They overcame all the difficulties and fulfilled the plan three months ahead of time, ______is something we had not expected.

选项 A、that
B、what
C、it
D、which

答案D

解析 本题考核的是which引导的非限制性定语从句。
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本试题收录于: 英语题库普高专升本分类
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