there are busy (clean) their classroom 用所给单词的适当形式填空

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therearebusy(clean)theirclassroom用所给单词的适当形式填空therearebusy(clean)theirclassroom用所给单词的适当形式填空therearebu

there are busy (clean) their classroom 用所给单词的适当形式填空
there are busy (clean) their classroom 用所给单词的适当形式填空

there are busy (clean) their classroom 用所给单词的适当形式填空
答案:They are busy【cleaning】their classroom .
翻译:他们正忙于打扫他们的教室.
解析;be busy doing sth.翻译为忙于做某事.
【你的10满意,我们团队的无限动力】

THEY are busy cleanING their classroom

1、be busy doing sth;
2、be careful