When the meeting was over,he _____ writing a report about it immediately.
问题描述：
When the meeting was over,he _____ writing a report about it immediately.
A.set off B.set out
C.set forth D.set about
why?
答
选 D set off 出发,动身,引爆 ；set out 开始,出发 set forth 动身,出发,陈列 set about 着手,开始做