—You ought to have made an apology to Tom yesterday evening—Yes I know I ．A. ought to ha

问题补充：

—You ought to have made an apology to Tom yesterday evening．

—Yes, I know I ．

A. ought to have

B. have to

C. should

D. must have

答案：

(答案→)A. ought to have

B. have to

C. should

D. must have

解析：考查情态动词。Should have done = ought to have done本应该做某事而实际上没有做。句意：昨天晚上你本应该向汤姆道歉的。是的，我知道我本应该向他道歉。所以选A，ought to have后省略了made an apology to him。