"Don't talk and play in class"为什么用"and"而不用"or"?

"Don't talk and play in class"为什么用"and"而不用"or"? don not talk and laugh loudly in class为什么不用or Don't talk ( )don't play in chess ( )里用and还是or? Don't talk in class,boys and girls,_____? Don't eat in class () don't fight in school用and还是or I don't like dress or skirt.为什么用or不用and? I don't like dress or skirt为什么用or不用and? Don't eat in class —— run in the hallways! 填and 还是 or 求解 i don't know when to study and when to play.不是否定句么?怎么不用or? 我不喜欢橙汁和牛奶 I don't like orange juice and milk 中的“and”为什么不用“or Don't talk l in class Don't talk in class怎么回答