—do you improve your English? —I improve itlistening to tapes.A. How withB. What withC.

问题补充：

—do you improve your English? —I improve itlistening to tapes.

A. How, with

B. What, with

C. How, by

D. What, by

答案：

A. How, with

B. What, with

(答案→)C. How, by

D. What, by

解析：句意：你是如何提高英语的？我通过听磁带来提高的。How 如何，疑问词，是对方式方法进行的提问。介词by，通过；by doing sth.通过做某事。