clean现在分词形式

现在分词： cleaning

过去式： cleaned

过去分词： cleaned

比较级： cleaner

最高级： cleanest

I'm always having to clean up after the children.

孩子们离开以后，我总得打扫一番。

She's always on my case about cleaning my room.

她老是对我的房间需要打扫的事指责个没完。

The new mayor is determined to clean up the city.

新上任的市长决心要整治好这座城市。