--- I didn’t tell my parents the secret yes

--- I didn’t tell my parents the secret yesterday.
--- But you ______.A.ought to doB.ought toC.shouldD.ought to have

D解析考查情态动词。句意：昨天我没有告诉我父母这个秘密。但是你本应该告诉他们的。ought to have done 本应该做某事，而实际上没有做，所以选D, ought to 后省略了told your parents。

这个问题的回答的对