2. 外语
  3. Nancy’s gone to work but her car’s still there. She _____ by bus.

Nancy’s gone to work but her car’s still there. She _____ by bus.

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问题 Nancy’s gone to work but her car’s still there. She _____ by bus.
选项 A、must have gone
B、should have gone
C、ought to have gone
D、could have gone
答案A
解析 根据句意应选A，因为must have done表示对过去事情的肯定推测。B和C中should／ought to have done都表示本应该做某事却没有做；D中could have done表示本可以做某事却没有做，显然均不符合题意。
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