◎ 题干
-Could you please sweep the floor?
-      I'm busy with my homework.
[     ]
A. Yes, sure.          
B. Why not?        
C. Sorry , you can't.    
D. Sorry, I can't.
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Could you please sweep the floor?— ________. I'm busy with my homework. [ ]A. Yes, sure. B. Why not? C. Sorry, you can't. D. Sorry, I can't. …”主要考查了你对  【日常用语、谚语】  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。