They overcame all the difficulties and fulfilled the plan ten days ahead of sche

游客2025-03-04 25

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

解析本题考查对句子的理解和从句的使用。因为两句之间没有连词，前面又用的是逗号，所以B和C两个指示代词填进去之后句法就不对，需要用关系代词来连接两个句子。关系代词指代的是前面整个句子，只能用which来引导，答案为D。

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