I know that all ___ well with her.A was; B were; C have been;D had been

问题描述:

I know that all ___ well with her.A was; B were; C have been;D had been

A
首先all代指的是事,所以动词用单数,排除B、C
其次,D是过去完成时,只有在句中有过去时的时候才能使用,排除D
所以选A