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介词.副词填空 At first, I couldn’t recognize his voice the phone.

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介词.副词填空 At first, I couldn’t recognize his voice the phone.

介词、副词填空

At first, I couldn’t recognize his voice    the phone.

 

试题答案

答案:on

解析:

开始的时候,我没有听出他在电话里的声音。