What_____you______(talk) about at 7.00 yesterday evening
问题描述：
What_____you______(talk) about at 7.00 yesterday evening
答
were talking
在昨晚7点你们正在讨论什么？
答
What did you talk (talk) about at 7.00 yesterday evening
答
were talking 具体到7点了,所以该用进行时表达
答
What___did__you___talk___(talk) about at 7.00 yesterday evening?
望采纳~