“do you watch TV?”“Every afternoon”A. How long B. How oftenC. How much D. When

问题补充：

--- “do you watch TV?”

--- “Every afternoon”

A. How long

B. How often

C. How much

D. When

答案：

A. How long

(答案→)B. How often

C. How much

D. When

解析：本题回答语表示频率，对此提问用how often，故本题选B。