问题
How long have you been studying in No.2 Middle School?—Less than half a year.—So it will be two years and a half _______ you graduate from this school.[ ]
A:when
B:after
C:before
D:while
B:after
C:before
D:while
正确答案是：
同类题型
I think _______ games are much better than _______ housework.
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