I ()TV whenmy mother () A.watched,came back B.was watching,came b_英语解答

I ()TV whenmy mother () A.watched,came back B.was watching,came back C.was watching,was caming back

人气：299 ℃　时间：2020-04-21 21:49:37

解答

B
固定句式：sb.was doing sth when sth happened.
或：sth happened when sb was doing sth.
表过去某个正在进行的动作被中断