Will you go there bus or foot?A. by; byB. on; onC. by; onD. on; by

问题补充：

Will you go there bus or foot?

A. by; by

B. on; on

C. by; on

D. on; by

答案：

A. by; by

B. on; on

(答案→)C. by; on

D. on; by

解析：by bus，by bike也可分别写为in a bus，on one’s bike；on foot意为：步行。