Question

—       do you play sports?
—Every day.
A、How long                 B、How far              C、How often

Answer 1

C

试题分析：句意：你多久做一次运动？每天。A多长，可表时间的长短；B多远，表距离；C多久一次，表频率，play sports做运动。结合语境，故选C。