高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
“You ought to have called Smith yesterday.” “Yes. I know I ＿＿＿＿＿.”
A.should have
B.ought
C.must have
D.have
“You ought to have called Smith yesterday.” “Yes. I know I ＿＿＿＿＿.”
A.should have
B.ought
C.must have
D.have
参考答案：