问题描述：
in two year 和 in two year's time区别
Our school will be more beatiful ______
A.in two year B.after two year's time
C.two years time D.in two years' time
选哪一个,理由,
Our school will be more beatiful ______
A.in two year B.after two year's time
C.two years time D.in two years' time
选哪一个,理由,
问题解答：
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