before-class activities,为什么用“-”?

before class 反义词 before class 中文 是before class begin 还是before class is begin before-class activities,为什么用“-”? Where do the students in your school come from? What do you do in the afternoon?How often do you have a PE class? Can you play the piano? What do you do for your after-school activit Before final exam,everyone in our class is b________. Before class ,I often help teachers____(hand )out our homework near the end of each class=before each class_____ I should have read about it before class art,is,ciass,math,before,class 连词成句 he had never been late for class before,( )he? He listens more ______in class than before(attentive) They always sing a song before class begains.(同义句转换)Their class always( )( )a song. we must put our things away both before class and after class是什么意思 You can do this before class ,and you can also do it after class.You can do this——before class ——after class.改为同义句 class class Class