◎ 题干
She has been practising _______ the same tune on the piano for nearly an hour.
[     ]
A.  play    
B.  playing    
C.  to play      
D.  be playing
◎ 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“She has been practising _______ the same tune on the piano for nearly an hour. [ ]A.playB.playing C.to playD.be playing …”主要考查了你对  【动名词】  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。