— do you write to your parents?—Every day.A. How longB. How soonC. How oftenD. How far

问题补充：

— do you write to your parents?—Every day.

A. How long

B. How soon

C. How often

D. How far

答案：

A. How long

B. How soon

(答案→)C. How often

D. How far

解析：根据此题的回答Every day可知是在问频率所以用How often“多久一次”来提问。How long 应回答长度； How soon 应回答时间； How far应回答距离。选C。