I should very much like to go to the party, but ___.

题目

I should very much like to go to the party, but ___.
A i am not invited
B i have not been invited
C i was not invited
D i will not be invited
but后要用虚拟语气我知道,但为什么选B这种形式呢,表示对过去的虚拟吗?省略了should?

答案