Mr. Black’s car is broken. So he has to go his bike to school.A. byB. onC. withD. in

问题补充：

Mr. Black’s car is broken. So he has to go his bike to school.

A. by

B. on

C. with

D. in

答案：

A. by

(答案→)B. on

C. with

D. in

解析：句意：布莱克先生的车坏了。所以他不得不骑自行车去学校。By+交通工具的单数名词，in/on+ 修饰限定词（a/one’s）+交通工具的单数名词，骑自行车用on one’ bike。故选B。