Simonisveryregretful.Ifhehadbeenmorecareful,he

问题详情：

Simon is very regretful. If he had been more careful, he _____ such a big mistake.

A. hasn’t made           B. hadn’t made

C. won’t have made       D. wouldn’t have made

【回答】

D

知识点：虚拟语气与情态动词

题型：选择题