How nuch is/are it/they 为什么不用how many?

How nuch is/are it/they 为什么不用how many? How nuch are the potatoes? how many is it 还有they is three yuan 和they are not to sale有什么 为什么用how many times have you read it而不用how many times have yo How many kinds of animals is endangered What are they? what.beautiful.girls.they.are! what为什么不用how how many yuan are they?how much yuan are they how is your study going为什么用is不用are? How many letter are they in "english"? how many is和how many are的区别 How much/How many are they?Three pages. How lovely!They are many birds.They are( )happily..