--- Fined $100! You know you 100km an hour, don’t you?
--- No, officer. I can’t have been. This car doesn’t do 80.
A. are driving
B. have driven
C. had driven
D. were driving
网友回答
A. are driving
B. have driven
C. had driven
(答案→)D. were driving
解析： 考查动词的时态。题意 罚款100，你知道你时速是每小时100公里吗？ 没有，长官，我不可能会是这个速度行驶。 根据下句can’t have done 表示对过去的推测。故选D项。
考点 动词的时态。