Question

– 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

Answer 1

B

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。