_____ how to deal with the trouble of the computer, Martin had to ask his brother for help.

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问题 _____ how to deal with the trouble of the computer, Martin had to ask his brother for help.

选项 A、Not know
B、Not known
C、Not to know
D、Not knowing

答案D

解析本题考查的是分词作状语。分词短语可以作原因、条件、伴随、时间、结果等状语成分。句子的主语与分词的逻辑主语应是一致的。如果分词与其逻辑主语间是主动关系，用现在分词表示；本句中know与它的逻辑主语Martin之间是主动关系，因此用现在分词表示，故选项D为正确答案。

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大学英语三级A级

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