she looked at me as if I had been a stranger.这句话是虚拟语气?虚拟语气里不都是有would/should那些?

she looked at me as if I had been a stranger.这句话是虚拟语气?虚拟语气里不都是有would/should那些?
这道题为什么选C?
3.I wish that I _________ with you last night.
A.went　　　　 B.could go
C.have gone　　　 D.could have gone
这个主句不是一般现在吗还用虚拟语气?
1.It is strange that he _________ so.
A.would say　　　　　 B.would speak
C.should say　　　　　 D.will speak