问题
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
B:couldn’ t have failed
C:might have failed
D:mustn’ t have failed
正确答案是：
同类题型
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