Question

—How do you improve your listening skill, Mary?
—I often do it _________ tapes and English radios.

A．by hearing

B．in listening to

C．by listening to

D．for listening

Answer 1

C

考查固定结构。By doing sth通过某种方式或手段。Listen是不及物动词，后跟宾语是要和to连用。所以选C。