问题补充:
Why did you keep it a secret from me ? I about it .
A. should be told
B. ought to have been told
C. should have told
D. ought to be told
答案:
A. should be told
B. ought to have been told
C. should have told
D. ought to be told
解析:表示应该做某事,但事实上没做到,应用“should / ought to +不定式的完成式”,本句为被动语态。