题目

题型：不详难度：来源：

—How time flies. A little boy turns into a young man.
—Yes, it won’t be long          he          from university.

A．when, will graduate	B．after, graduates
C．since, had graduated	D．before, graduates

答案

D

解析

考查句型：it won’t be long before+ 一般现在时态，意为：不久就……，句意：时间过得飞快！一个小男孩变成一个年轻人。是的，不久他就会从大学毕业了。所以选D。