a one year 有这种用法的么?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/05 11:54:08

a one year 有这种用法的么?
原题是：It's been a ___ year since I last saw you.
A.whole B.two C.who D.one
书上写的正确答案是 D
因为只见过a whole year,而没见过a one year 这种用法,所以想请教一下有这种用法么,要有的话有是不是有什么特殊含义?

语意重复,a one-year project..这样就可以用.
这题只能是 whole .

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