Jim often goes to school bike. But today he goes to school the school bus.A. on byB. by

问题补充：

Jim often goes to school bike. But today he goes to school the school bus.

A. on, by

B. by, by

C. by, on

D. on, on

答案：

A. on, by

B. by, by

(答案→)C. by, on

D. on, on

解析：by表示交通方式时，后面直接加交通工具，On the school bus 在校车上。