—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
—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
B