问题补充:
There was a lot of fun at yesterday’s party. Youcome, but why didn’t you?
A. must have
B. should
C. need have
D. ought to have
答案:
A. must have
B. should
C. need have
(答案→)D. ought to have
解析:ought to have done 表示本来应该做某事而实际没做,should do 表示现在应该做某事,与题中 at yesterday’s party 表示的时间不一致。所以选D。