—John, how did your maths exam go?
—I thought I________, but in fact I came in the top ten in the class.
A.should have failed |
B.couldn't have failed |
C.might have failed |
D.mustn't have failed |
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—John, how did your maths exam go?
—I thought I________, but in fact I came in the top ten in the class.
A.should have failed |
B.couldn't have failed |
C.might have failed |
D.mustn't have failed |