11. —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
A. needn’t
B. shouldn’t
C. couldn’t
D. might not
网友回答
A. needn’t
B. shouldn’t
(答案→)C. couldn’t
D. might not
解析：可联系答.案.网客服索取。