27. —— My goodness! I've just missed the train.
—— That's too bad. I am sure you it, if you had hurried.
A. could have caught
B. had caught
C. would catch
D. could catch
网友回答
(答案→)A. could have caught
B. had caught
C. would catch
D. could catch
解析:可联系客服索取此答案。