__he was crossing the bridge,the earth suddenly began to shake.a)_英语解答

__he was crossing the bridge,the earth suddenly began to shake.a)wgile b)when c)as d) after

人气：133 ℃　时间：2020-06-11 08:59:45

解答

A
四个选项中其实when as while 这三个词都对 .都表示表示一个动作的发生时另外一个动作的发生
但是在选择题中当然不能多选、而as 和when在引导时间状语从句时几乎可以对等、所以按排除法就只能选A while