－Mary, how did your Math test go?
－I had thought I , but in fact I came in the top 10% in my class.
A. should have failed
B. couldn’t have failed
C. might have failed
D. shouldn’t have failed
网友回答
A. should have failed
B. couldn’t have failed
(答案→)C. might have failed
D. shouldn’t have failed
解析：可联系答.案.网客服索取。