Have the scientists_____ spoken to the astronauts?A.already B.just C.ever D.yet

问题描述:

Have the scientists_____ spoken to the astronauts?A.already B.just C.ever D.yet

A为什么嘞?现在完成时,一般与already连用,用来表示完成。科学家们已经和宇航员说过话了吗?那为什么不选c啊?ever如果用在此处,有“曾经”之意,科学家们曾经和宇航员说过话吗?不好