Most of my classmates prefer to to school.A. riding walkingB. by bike on footC. to ride

问题补充：

Most of my classmates prefer to to school.

A. riding, walking

B. by bike, on foot

C. to ride, walk

D. ride, walk

答案：

(答案→)A. riding, walking

B. by bike, on foot

C. to ride, walk

D. ride, walk

解析：perfer AtoB.与B相比更喜欢A。AB为名词或动名词。介词短语不能做宾语和主语，故选A。