【答案】on,for,with的运用：What are they doing? -They are cheering---their Class team.

问题描述：

What are they doing? -They re cheering___their Class team.

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最佳答案：

What are they doing?

-They are cheering for their class team.

他们正在为他们班级欢呼。

cheering for：为…欢呼

例：cheering for life：为生命喝彩

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