高等继续教育 / 电子商务英语
正确率：100%
题型描述: 单选题
He ＿＿＿＿＿＿＿in London by eleven o’clock, but he started too late.
A.might have been
B.must have been
C.should bex
D.ought to have been
He ＿＿＿＿＿＿＿in London by eleven o’clock, but he started too late.
A.might have been
B.must have been
C.should bex
D.ought to have been
参考答案：