Today is teacher ' s day . the pupils of class one , grade two are very busy . at 6 : 30 in dhe morning , they are all in the classroom . they ' re cleaning the classroom . some are cleaning the windows , some are cleaning the desks and chairs , and the others are sweeping the floor 中文:今天是教師節(jié).一些小學生在二年級一班非常忙.在早上六點三十分,他們所有人都在教室.他們正在打掃教室.一些在擦窗戶,一些在擦桌子和擦椅子,和一些在掃地