—I didn’t tell him the news.—Oh you ought .A. to 　　 B. not toC. not to have 　D. to have

问题补充：

—I didn’t tell him the news.

—Oh, you ought .

A. to

B. not to

C. not to have

D. to have

答案：

A. to

B. not to

C. not to have

(答案→)D. to have

解析：本题考查情态动词的用法。此处表示“过去你应该告诉他这消息，可你没告诉他。” ought not to have done “过去本不该做某事却做了。” ought to have done 意为本来应做但实际没有做。简略答语中have不可省。