◎ 题干
-Hi,Tracy,you look tired.
-I________the living room for three hours.
[     ]
A.paint    
B.had painted
C.was painting  
D.have been painting
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“-Hi,Tracy,you look tired.-I________the living room for three hours.[ ]A.paint B.had paintedC.was painting D.have been painting…”主要考查了你对  【现在完成进行时】  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。