— do you surf on the Internet?—Once every week. I watch some latest news and chat with my

问题补充：

— do you surf on the Internet?

—Once every week. I watch some latest news and chat with my pals there.

A. When

B. How long

C. How often

D. What time

答案：

A. When

B. How long

(答案→)C. How often

D. What time

解析：根据后文的答语，可知答案为C，表示多久一次，故选C