---does your sister go skateboarding?Every day.A. How longB. How manyC. How muchD. How

问题补充：

---does your sister go skateboarding?

--- Every day.

A. How long

B. How many

C. How much

D. How often

答案：

A. How long

B. How many

C. How much

(答案→)D. How often

解析：How long多长；How many多少个；How much多少钱；How often多久一次。根据下文，每天。可知上文提问频率，故选D。