问题补充:
It was ten years he returned to his hometown and set out to revenge his dead father.
A. since
B. that
Cbefore
Dwhen
答案:
A. since
B. that
(答案→)C. before
D. when
解析:考查连词。since 自从……以来; that因为,以至于;before在……之前;when当……时。句意:在他返回家乡为他的父亲报仇之前以后十年的时间了。故选C。