i often eat baozi or mantou中间为什么用or不用and

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? I don't eat onions ____ porridge often .A.or B.and C.of 怎么选 could you buy drinks___snacks?为什么用and不用or呢 which is bigger,the sun or the earth?为什么用or而不用and? some studens walk or ride bikes to school 为什么用or而不用and We can't live without air and water.为什么用and不用or啊? Is to rush and run to you 中为什么用and不用or "Don't talk and play in class"为什么用"and"而不用"or"? nothing to sell and nothing to buy为什么不用or They often get it in the chop and take it home or eat it in We shouldn't smoke and eat or drink here.是用and 还是or?