-Did they tell you the final decision of the committee?---No they didn’t but I think

问题补充：

---Did they tell you the final decision of the committee?

---No, they didn’t, but I think I ought to .

A. /

B. be

C. have

D. have been

答案：

A. /

B. be

C. have

(答案→)D. have been

解析：由句意可以得知，I think I ought to have been told.