— do you usually come to school? —By bike. A. How B. What C. How often

问题补充：

— do you usually come to school? —By bike.

A. How B. What C. How often

答案：

解析：句意：——你经常怎么来学校？——骑自行车。A. How 如何，怎么；B. What 什么；C. How often多久一次。根据By bike可知这是对交通方式的提问，故用how，故选A。