Question

完成句子

Tom hid himself behind the door, _________(从那里他可以听到)the steps of his mother clearly．(hear)

Answer 1

答案：
解析：

答案：from where he could hear 　　解析：考查定语从句。本句是一个非限定性定语从句，从句由where引导并用来作介词from的宾语。