John and Mary_____each other pretty well before they got married.A.knew B.know C.had known D.have known

分类: 作业答案 • 2021-12-20 03:49:41

问题描述：

John and Mary_____each other pretty well before they got married.
A.knew B.know C.had known D.have known

答

c
before前面一般用完成时,因为后面是过去式,所以用过去完成时