Question

Being examined twice a year，whether it is a car or a bus or a truck，is the rule that every driver _______obey in this city.

A．shall

B．can

C．ought to

D．need

Answer 1

A

这题考查情态动词的用法，shall表示“规定，命令，警告等”句意是：不管汽车、公共汽车、或卡车，每年检查两次是这个城市每个司机要遵守的规则。选A。