◎ 题干
—______ does your sister walk her dog ?  
—Once a day.
[     ]
A. How many  
B. How fast  
C. How soon  
D .How often
◎ 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“—______ does your sister walk her dog?— Once a day. [ ]A. How many B. How fastC. How soonD. How often …”主要考查了你对  【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。