— do you go to the school library?—Often. I like reading there.A. How manyB. How muchC. Ho

问题补充：

— do you go to the school library?

—Often. I like reading there.

A. How many

B. How much

C. How often

D. How long

答案：

A. How many

B. How much

(答案→)C. How often

D. How long

解析：How many多少个；How much多少；How often 多久一次； How long多长。根据下文，经常。我喜欢在那儿读书。可知上文问的是，你多久去一次学校图书馆？故选C。