I often go to school .A. ride my bikeB. by bikeC. by a bikeD. on bike

问题补充：

I often go to school .

A. ride my bike

B. by bike

C. by a bike

D. on bike

答案：

A. ride my bike

(答案→)B. by bike

C. by a bike

D. on bike

解析：by+交通工具表示乘坐某种交通工具。在交通工具前不需要加任何冠词。