Kangkang usually goes to school by .A. a carB. the carC. carsD. car

问题补充：

Kangkang usually goes to school by .

A. a car

B. the car

C. cars

D. car

答案：

A. a car

B. the car

C. cars

(答案→)D. car

解析：本题考查介词by的用法。by+交通工具表示乘坐……交通工具，其后所接的名词用原形，不加限定词（如冠词、物主代词等），也不用复数。