I ______ you were here.A.don’t know B.won’t think C.think D.didn’t know

题目

I ______ you were here.A.don’t know B.won’t think C.think D.didn’t know
.---Hi,Tom.
---Hello,Fancy.I ______ you were here.
A.don’t know B.won’t think C.think D.didn’t know
麻烦回答一下为什么可以吗？
现在网上的答案有A有D。练习题给的正确答案是A，我觉得正确答案是D吧……

答案

D,后面 有个be动词were ,所以是一般过去式 ,4个选项就D 有表示过去时.朋友,这样看啊.传统语法的前后时态前后呼应是规则.但是,这条规则有明显不合理的地方.“I didn’t know his mother was a teacher.”一句,符合“...