The floor in your room needs_______________It is really dirty.

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The floor in your room needs_______________It is really dirty.
The floor in your room needs_______________It is really dirty.

The floor in your room needs_______________It is really dirty.
应填:to be cleaned
翻译:房间的地板需要清理了,太脏了.
这里因为地板是被清理,所以是被动语态.
need to do (需要做某事)

cleaning

一楼二楼的回答都是可以的。

to be cleaned(不能用-ing形式)