2. 外语
  3. I ______ the train but I overslept that morning.

I ______ the train but I overslept that morning.

admin2012-01-05  28
问题 I ______ the train but I overslept that morning.
选项 A、could catch
B、might catch
C、must have caught
D、could have caught
答案D
解析 考查虚拟语气。前半部分是对过去的假设，后半部分为现实的情况，could have done意为“本可以做却没有……”，D正确。must have done表示对过去的肯定推测。
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