— People should stop using their cars and start using public transport.— . The roads are t

问题补充：

— People should stop using their cars and start using public transport.

— . The roads are too crowded as it is.

A. All right

B. Fine

C. Go ahead

D. Exactly

答案：

A. All right

B. Fine

C. Go ahead

(答案→)D. Exactly

解析：Exactly.可用于答语，表示完全同意对方的意见;All right.好吧，同意那样做;Go ahead.继续进行。Fine身体好的。人们应该停止使用私家车而改用公共交通工具，这是一条建议，所以应选D。