I was doing mu homework____the telephone rang,It was my auntAwhen_英语解答

I was doing mu homework____the telephone rang,It was my aunt
Awhen Bwhile Cas Das soon as

人气：292 ℃　时间：2020-03-20 15:47:44

解答

when
这是一个由when引导的时间状语从句,主句用过去进行时,从句用一般过去时.