Question

－Susan married Jason last Sunday．

－Really?How long ________ each other?

－No more than a week, I’m afraid．

[　　]

A．

did they know

B．

have they known

C．

have they got to know

D．

had they known

Answer 1

答案：D
提示：

认识在结婚这个过去动作之前，故用过去完成时。