◎ 题干
-Is your sister at home, Dennis?                
-No, she isn't. I think she _     _ the piano in Anna's living room.              
[     ]
A. can play        
B. could be playing  
C. had played        
D. plays
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“-Is your sister at home, Dennis? -No, she isn't. I think she _ _ the piano in Anna's living room. [ ]A. can play B. could be playingC. had playedD. play…”主要考查了你对  【现在进行时】  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。