29.---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. couldn’ t have failed
C. might have failed
D. mustn’ t have failed
网友回答
A. should have failed
B. couldn’ t have failed
(答案→)C. might have failed
D. mustn’ t have failed
解析:可联系客服索取此答案。