问题
单项选择题
"You realize that you were driving at 100mph, don't you " "No, officer, I may not have been. This car can't do more than 80."
A.will not
B.cannot
C.might not
D.could not
答案
参考答案:D
解析:[分析] 情态动词应用 在此因表过去不大可能发生的事,应用couldn't+have+过去分词;因此D为答案。