When all those present(到场者)__ he began his lecture.(重点题) A.sit B.set C.seated D.were seaed
问题描述:
When all those present(到场者)__ he began his lecture.(重点题) A.sit B.set C.seated D.were seaed
选哪个 why?
答
D 应该用Be seated这种表示方式,来表示用When引导的时间状语从句...