If you had joined the chat room ten minutes ago,you would have known what we about.If you had joined the chat room ten minutes ago,you would have known what we about.A.Talked\x05 B.have talked C.were talking D.would talk为何A选项不是呢

If you had joined the chat room ten minutes ago,you would have known what we about.If you had joined the chat room ten minutes ago,you would have known what we about.A.Talked\x05 B.have talked C.were talking D.would talk为何A选项不是呢
If you had joined the chat room ten minutes ago,you would have known what we about.
If you had joined the chat room ten minutes ago,you would have known what we about.
A.Talked\x05 B.have talked C.were talking D.would talk
为何A选项不是呢?
如果你十分钟以前进入聊天室的话,你就会知道我们在谈论什么内容.

If you had joined the chat room ten minutes ago,you would have known what we about.If you had joined the chat room ten minutes ago,you would have known what we about.A.Talked\x05 B.have talked C.were talking D.would talk为何A选项不是呢
注意有ten minutes ago,这是一个时间点,那么在10分钟前,我们是正在做某事,所以选C

选C 因为 were用于一般过去时. were 一般用在第二人称单数且是过去式的时候， 句子是第二人称结构所以选C
答案A 是不对而且读起来也不通顺。
答案D would talk 是说将来, 所以也不对