______ the cause, they were able to propose to a remedy.A、FoundB、Having foundC

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问题 ______ the cause, they were able to propose to a remedy.

选项 A、Found
B、Having found
C、Have found
D、Having been found

答案 B

解析本句中现在分词作状语，其动作在谓语之前，所以用完成式。因为分词和句子的主语之间是主动关系，所以A，D是错误的，故选B。

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