I'm sure that they were listening to the radio. they been listening to the radio.同义句

分类: 作业答案 • 2022-01-02 15:22:02

问题描述：

I'm sure that they were listening to the radio. they ____ ____been listening to the radio.同义句

答

must have

答

must be
must be doing，一定在做某事

答

更正楼上答案如下：
= They (must have) been listening to the raido.
must have been doing sth （当时）一定在做某事
如果对你有所帮助,请点击我回答下面的“选为满意回答”按钮,

I'm sure that they were listening to the radio. they ____ ____been listening to the radio.同义句