虚拟语气 would 或should?

题目

虚拟语气 would 或should?
Had you prepared for your lecture ,you__ more fluently.
A.should have spoken B.would have spoken
C.woudl speak D.had spoken
A 也可以的吧?虚拟语气过去时的用法,主句不是would /should /could /might +have +过去分词吗?

答案

should have done 一般是指责备的语气,“应该做了的”之意