While Lucy( ) on the phone,a man walked into her room.A.is talking B.was talking C.talked D.talk
问题描述：
While Lucy( ) on the phone,a man walked into her room.A.is talking B.was talking C.talked D.talk
答
B
while引导的从句往往用过去进行时是,表示过去某个时间正在发生的动作.
不明白的再问哟!请记得采纳,多谢!