Why did you keep it a secret from me ? I about it . A. should be told B. ought to have be

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。