◎ 题干
--_________ should your robot need_________ batteries?    
--Every two months.
[     ]
A. How soon, to be changed            
B. How long, to change    
C. How much, change                
D. How often, to change
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--_________ should your robot need_________ batteries?--Every two months.[ ]A. How soon, to be changedB. How long, to changeC. How much, change D. How ofte…”主要考查了你对  【不定式】【疑问词组】  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。