All the investigations______before the deadline, the staff decided to have a par

游客2024-10-18 7

问题 All the investigations______before the deadline, the staff decided to have a party as a celebration.

选项 A、been fulfilled
B、had been fulfilled
C、were fulfilled
D、having been fulfilled

答案 D

解析独立结构题。 “名词／代词+现在分词／过去分词／不定式”是独立结构，一般可以置于句首(也可以置于句末)，表示原因、时间、条件、方式或伴随情况。选项B和C不符合语法规则，没有连词连接的两个独立的句子不能并置。由句意判断，这里应选现在分词的完成被动形式，故选D。

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