I am glad you have come back from Beijing.Please tell me how

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/08/29 05:22:51

I am glad you have come back from Beijing.Please tell me how long you ____ there.
A)have stayed
B)had stayed
C)have been staying
D)stayed
请说明原因,

A
再问：为什么呢?
再答： have stayed 表示层级在那里呆过，到现在仍然是存在的，没有终止的一个问题，所以用have不用had，用现在完成时，选项C have been staying 不适合，因为已经回来了，而且stay for some time是不可持续动词，只是表示一种状态而不是动作。D stayed表示过去式，很明显不适合，因为题目中要求的是意思是曾经呆过多久，用完成式。

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