----Why didn't you go to Mike's birthday party last night?-----we_英语解答

----Why didn't you go to Mike's birthday party last night?-----well,I ___,but I forget it.
A,should B.should have

人气：259 ℃　时间：2019-08-20 07:37:30

解答

B
本应该是虚拟语气吗?为啥要have?should have是本应该而没有做的意思