I often spend an hour____to English on the radio.A,to practice listening B,practicing listening

分类: 作业答案 • 2021-12-28 11:32:56

问题描述：

I often spend an hour____to English on the radio.A,to practice listening B,practicing listening
C,practicing to listen为什么选B

答

正确：B
spend some time (in) doing sth.
practice doing sth.
因此,两个词都必须使用doing形式.