周末我花了一整个上午打扫房间。

I spent the whole morning ___cleaning up my room on the weekend.

志愿者们正在公园里清理垃圾。

The volunteers are ___cleaning up the trash in the park.

市长承诺要整顿城市的交通混乱问题。

The mayor promised to ___clean up the city's traffic chaos.