They overcame all the difficulties and fulfilled the plan ten days ahead of schedule, ______ was something we had not expected.

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问题 They overcame all the difficulties and fulfilled the plan ten days ahead of schedule, ______  was something we had not expected.

选项 A、that
B、this
C、it
D、which

答案D

解析 语法结构题。根据句法知识,此处应为一非限制性定语从句。故D为正确答案。句意:他们克服了所有困难并提前十天圆满完成了任务,这是我们没有预料到的。
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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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