问题描述:
It _____ five years since I came to this city.
A.was B.is C.will be D.had been
正确答案为is,为什么是is .has又行不行呢
A.was B.is C.will be D.had been
正确答案为is,为什么是is .has又行不行呢
问题解答:
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