---- four years since I joined the Army.

问题描述:

____ four years since I joined the Army.
A. There was B. There is C. It was D. It is
为什么选d不能选c啊?
1个回答 分类:英语 2014-11-25

问题解答:

我来补答
It is sometime since
自从..以来已经多长时间了
 
 
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