问题
选择题
I told Sally how to get here, but perhaps I _______ for her.
A．had to write it out
B．must have written it out
C．should have written it out
D．ought to write it out
答案
答案：C
“ought to / should have+过去分词”表示后悔当初该做但却没做某事。“…也许我本该把详细地址写给她的。”