-My God! I have to walk home now, for I just missed the bus. -Th

-My God! I have to walk home now, for I just missed the bus. -That's too bad. You ______it had you set out a bit earlier.
A、should have caught.
B、had caught
C、would have caught.
D、could
【正确答案】：A
【题目解析】：should have done 表示“本应该(但是没)”