问题
选择题
—Sorry, the tickets have already been sold out.
—Really? Maybe I _______ a little earlier.
A．should come
B．should have come
C．could have come
D．must have come
答案
答案：B
题目分析：考查情态动词表推测。根据句意：—票都已经卖完了。—真的吗？或许我本该早点来。用should have done表示“本应该干某事”对过去的猜测。C项为“本可以早点来”；D项为“肯定早来了”。所以答案选B。