( )His father fell asleep ______ he was listening to the music.A.after B.before C.while

问题描述:

( )His father fell asleep ______ he was listening to the music.A.after B.before C.while
D.as soon as

C
边..边..用while
while引导的时间状语从句中一般跟进行时连用,本题是was listening to 过去进行时,前用whileas soon as..一..就...,后面不跟进行时