2. 外语
  3. You shouldn’t have asked the boy to run across the street to buy cigarettes; he ______by a passing car.

You shouldn’t have asked the boy to run across the street to buy cigarettes; he ______by a passing car.

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问题 You shouldn’t have asked the boy to run across the street to buy cigarettes; he ______by a passing car.
选项 A、may be knocked down
B、should have been knocked off
C、might have been knocked down
D、will have been knocked down
答案C
解析 虚拟语气题。might have done意为“有可能发生某事”，表示对过去情况的推测；选项A表示对现在情况的推测；选项B表示“过去本应该做某事，但事实上未做”；选项D是将来完成时，与题中时态不符。根据题意应选C。
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