--do you improve your English ?--I improve itpracticing it more often.A. How; withB. What;

问题补充：

--do you improve your English ?

--I improve itpracticing it more often.

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：What什么；with用某种工具；How怎样；by用某种方式。句意：你怎样提高你的英语？——我通过经常练习来提高它。故选C。