﹣Mary，howdidyourMathtestgo？﹣IhadthoughtI
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问题详情：
﹣Mary，how did your Math test go？
﹣I had thought I _________，but in fact I came in the top 10in my class．（ ）
A．should have failed B．couldn't have failed
C．might have failed D．shouldn't have failed
【回答】
C
知识点：连词
题型：选择题
