题目

—John, how did your English exam go? — I thought I _____ , but in fact I came in the top 10% in the class. A. should have failed              B. might have failed C. couldn’t have failed               D. mustn’t have failed   答案： B   考查情态动词的用法。此处might have failed表示对过去事实的推测。句意：我原以为我会失败的。  

查看本题答案和解析