Question

—______ do you go skateboarding?   --- Twice a week.

A．How soon

B．How far

C．How often

D．How long

Answer 1

C

试题分析：句意：你多长时间踩一次滑板？一周两次。根据答语Twice a week.一周两次，可知提问的是频率，要用how often，故选C。