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I have learned that clothes ______ online are of poor quality.

A. bought B. buying C. to buy D. having bought

 

A

【解析】

試題分析：句意：我已經知道網上買的衣服質量差。這里需要定語修飾clothes，因為clothes和buy是被動關系，用過去分詞做定語，所以選A.

考點：考查過去分詞做定語

 

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