-___do you improve your listening?

问题描述:

-___do you improve your listening?
A.How;by
B.How;with
I improve it____ listening to tapes.

A by表方式,with是用...(具体事物),
如:You did it by persisting.你靠持恒成功了.
I write the letter with a pen.我用笔写信.