– What a nice motorbike! have you been on it?–Just to BeijingA. How longB. How soonC. How

问题补充：

– What a nice motorbike! have you been on it?

–Just to Beijing

A. How long

B. How soon

C. How far

D. How often

答案：

A. How long

B. How soon

(答案→)C. How far

D. How often

解析：How long多长；How soon多久；How far多远；How often多久一次。根据答语，只是到北京。可知上文问的是距离，故选C。