12.YOU REALIZE THAT YOU WERE DRIVING AT 100 MILES PER HOUR,DON'T YOU NO,OFFICER.I HAVE BEEN.THISCAR CAN'T DO MORE THAN70.A:NEEDN'T B:SHOULDN'T C:COULDN'T D:MIGHT NOT

12.YOU REALIZE THAT YOU WERE DRIVING AT 100 MILES PER HOUR,DON'T YOU NO,OFFICER.I HAVE BEEN.THISCAR CAN'T DO MORE THAN70.A:NEEDN'T B:SHOULDN'T C:COULDN'T D:MIGHT NOT
12.YOU REALIZE THAT YOU WERE DRIVING AT 100 MILES PER HOUR,DON'T YOU NO,OFFICER.I HAVE BEEN.THIS
CAR CAN'T DO MORE THAN70.
A:NEEDN'T B:SHOULDN'T C:COULDN'T D:MIGHT NOT

12.YOU REALIZE THAT YOU WERE DRIVING AT 100 MILES PER HOUR,DON'T YOU NO,OFFICER.I HAVE BEEN.THISCAR CAN'T DO MORE THAN70.A:NEEDN'T B:SHOULDN'T C:COULDN'T D:MIGHT NOT
楼主问题应该是这样：
12.----You realize that you were driving at 100 miles per hour,don't you?----No.officer.I _____ have been.This car can't do more than 70.
C:COULDN'T 是对的.
couldn't have done是“（过去）不可能做某事”的意思,表示对过去事情的否定性推测.

B

是替换题中的“can't”吗，可以用couldn't

选C。表不可能

C