◎ 题干
—What is your brother doing?
—He is _____ what to do this summer vacation.
[     ]
A. looking after    
B. helping with
C. thinking about  
D. waiting for
◎ 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“—What is your brother doing? —He is _____ what to do this summer vacation.[ ]A. looking afterB. helping with C. thinking about D. waiting for …”主要考查了你对  【动词短语】  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。