答：选A,因为前面有How many ,且book是可数名词,所以应该改为books,连起来就是：
How many books do you have?
有什么不懂请继续追问
How many book do you have?- - -
How many book do you have?- - -
How many book do you have?
- - -
a b c找出错误并改正
How many book do you have?
- - -
a b c找出错误并改正
数学人气：905 ℃时间：2020-03-14 15:14:33
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