问题
选择题
---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
答案
答案：C
句意：我本以为我可能会失败。Might have done表示对过去的一种推测；A项意为“本应该做而实际未做”；B项意为“不可能”；D项表示禁止。
【标签】情态动词表推测
