英语 情态动词 (3 17:16:26)

题目

英语 情态动词 (3 17:16:26)
you ought to have make an apology to Tom yesterday evening.
Yes,I know I----
a.ought to           b.have to           c.should have          d.must have

答案

选c
ought to have done sth(本应该做某事但没做)=should have done sth