2. 外语
  3. The passenger ______(肯定出事了), otherwise he would have arrived by that time.

The passenger ______(肯定出事了), otherwise he would have arrived by that time.

admin2010-05-26  29
问题 The passenger ______(肯定出事了), otherwise he would have arrived by that time.
选项
答案must have had an accident
解析 must后接动词原形表示对现在发生的事情的肯定猜测，接完成时表示对过去事情的肯定猜测。
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大学英语四级

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