It was strange that 后面是不是should do 可以接should have done

题目

It was strange that 后面是不是should do 可以接should have done
It was strange that you ______ for Maggie’s address.I just got a letter from her---the first one since her family moved on August 31,1999.
A.should have asked B.should ask C.could ask D.would have asked
选哪个答案,为什么?

答案

选A,should不仅是虚拟语气,在有的语境下其实是表示惊讶,就是“竟然,居然”的意思.
这个句子应该是,太奇怪了,你竟然已经问了maggie的住址了.我刚收到她的信,这是她1999年搬走之后写来的第一封信.