◎ 题干
Bob has a friend who _____ the piano very well.        
[     ]
A. play            
B. playing      
C. plays        
D. played
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Bob has a friend who _____the piano very well. [ ]A. playB. playing C. playsD. played…”主要考查了你对  【实义动词的单数第三人称形式】  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。