– When did you to do the work?
- Two months ago, we are through 80% of it at the moment.
A. set off
B. set out
C. set up
D. set about
网友回答
A. set off
(答案→)B. set out
C. set up
D. set about
解析：考查短语辨析。set off 出发，set out to do 着手做某事，set up 建立，set about doing sth 着手做某事，句意：你是什么时候着手工作的？两个月前，此刻我们完成了工作的百分之八十了。根据语境选B。