◎ 题干
We spend about an hour a day          .       
[     ]
A. do our homework    
B. doing our homework
C. do our homeworks    
D. doing our homeworks
◎ 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“We spend about an hour a day .[ ]A. do our homework B. doing our homework C. do our homeworks D. doing our homeworks …”主要考查了你对  【不可数名词】【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。