----John, how did your monthly exam go ?
----I thought I_______, but in fact I was among the top 5%of the students
A. should have failed B. couldn’t have failed
C. might have failed D. needn’t have failed
----John, how did your monthly exam go ?
----I thought I_______, but in fact I was among the top 5%of the students
A. should have failed B. couldn’t have failed
C. might have failed D. needn’t have failed
C