---“ do you watch TV?”---“Every day.”A. How longB. How muchCHow oftenD. When

问题补充：

---“ do you watch TV?”

---“Every day.”

A. How long

B. How much

CHow often

D. When

答案：

A. How long

B. How much

(答案→)C. How often

D. When

解析：疑问词辨析. A. 多久 B.多少,提问不可数名词 C.多久一次 D.什么时候.根据答语,每天.可知提问频度,故选C.