—How time flies. A little boy turns into a young man.—Yes, it won’t be longhefrom universi

—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

A. when, will graduateB. after, graduatesC. since, had graduated (答案→)D. before, graduates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。

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