—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

男 * * ()

A．为一细而直的管道

B．仅有排尿功能

C．前列腺部最短

D．海绵体部又叫前尿