◎ 题干
He has a friend who _____ the piano very well.  
[     ]
A. play
B. playing
C. plays
D. played
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“He has a friend who _____ the piano very well.[ ]A. play B. playing C. plays D. played…”主要考查了你对  【一般现在时】【主谓一致】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。