I often spend an hour----to English on the radio.A,to practi

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
1个回答 分类:英语 2014-12-12

问题解答:

我来补答
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.
 
 
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