Someone is speaking, but you want to say something., You finish your work before everyone else., You don't understand the instructions., You know the answer, but you're afraid it might be wrong., The lesson is starting, but you don’t have your materials., There are papers on the floor and things are left on the desks.

classroom rules

排行榜

视觉风格

选项

切换模板

恢复自动保存:?