ItoldSallyhowtogethere, butperhapsI

问题详情：

 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

【回答】

【解析】选C。“ought to/should have+过去分词”表示后悔当初该做但却没做某事。后半句句意：“……也许我本该把地址详细写给她的。”

知识点：虚拟语气与情态动词

题型：选择题