– Kate do you know it is from here to the gym?– About 20 minutes by bikeA. How longB. h

问题补充：

– Kate, do you know it is from here to the gym?

– About 20 minutes by bike

A. How long

B. how far

C. how often

答案：

解析：句意:凯特，你知道从这到体育馆多远吗？骑自行车大约20分钟。故选C。A. How long 多长， B. how far多远，C. how often多久一次。据答语问句要问多远，故选B。