When all those present___he began his lecture.A.sit B.set C.seated D.were seaed
问题描述：
When all those present___he began his lecture.A.sit B.set C.seated D.were seaed
为什么 AB改为sat就可以 不是不及物动词吗?
答
的确是不及物动词,你不能理解是因为这里作了倒装,将时间状语从句前置了.
正常语序为：
He began his lecture when all those present sat.