问题描述：
一道有关时态的英语选择题~
Oh,it’s you.I’m sorry I _______ know you _______ here.
A.don’t; are B.didn’t; are
C.didn’t; were D.don’t; were
这道题选C,为什么不选B呢
Oh,it’s you.I’m sorry I _______ know you _______ here.
A.don’t; are B.didn’t; are
C.didn’t; were D.don’t; were
这道题选C,为什么不选B呢
问题解答：
我来补答展开全文阅读