do you have a P.E Festival in your school?-Once a year.A. How longB. How oftenC. Ho

问题补充：

--- do you have a P.E Festival in your school?

---Once a year.

A. How long

B. How often

C. How far

D. How soon

答案：

A. How long

(答案→)B. How often

C. How far

D. How soon

解析：句意：---你们学校多长时间举办一次体育节----一年一次。how long多长时间，一般对表示for+时间段提问；how often多长时间一次，对表示频率的副词如usually，often等和短语once a week一周一次，twice a month一个月两次等提问；how soon多久，对in + 时间段提问；how far多远，对表示距离的单词提问。故选B。