Today, the school said it would clean up. The students happily rolled up their sleeves and studied hard.

Look! The little fat man here, with a rag, is cleaning the window; Look! The little girl over there trudged over with a bucket full of water. Hey! The "small glasses" in front of me, not wiped with water mist, are still trying to sweep the floor.

The students are actively cleaning, and the campus is a busy scene.