According to the traffic rules you wear the safe belt while you are driving.A. canB. nee

问题补充：

According to the traffic rules, you wear the safe belt while you are driving.

A. can

B. need

C. may

D. shall

答案：

A. can

B. need

C. may

(答案→)D. shall

解析：考查情态动词：句意：根据交通法规，你开车的时候要戴安全带。Shall可以用于第二第三人称表示“命令，警告，规定，允诺等”，can能够，need需要，may可以，选D。