IN the last few years Beijing ()greatly Ahas changed Bhas be

问题描述:

IN the last few years Beijing ()greatly Ahas changed Bhas been changed
为什么不选择b?
1个回答 分类:英语 2014-09-27

问题解答:

我来补答
IN the last few years这个时间限定,要用过去完成时.
 
 
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