do you go to school on foot or by bus?A. WhenB. WhyC. HowD. What

问题补充：

do you go to school, on foot or by bus?

A. When

B. Why

C. How

D. What

答案：

A. When

B. Why

(答案→)C. How

D. What

解析：根据题干中的on foot or by bus我们知道，询问的是交通方式，再根据选择项的提示可知本题选C.