— do you read English newspaper?—I read 21st Century every day.A. How longB. How oftenC.

问题补充：

— do you read English newspaper?

—I read 21st Century every day.

A. How long

B. How often

C. How many

D. How much

答案：

A. How long

(答案→)B. How often

C. How many

D. How much

解析：根据答语I read 21st Century every day.可知问句内容为问的是频率，故选答案为B