There are 45 m什么什么 ... in our class

There are 45 m什么什么 ... in our class There are m public signm后面填什么 there they are.和they are there有什么区别? There are always some people think I'm gigantic loser这里面有什么语法错误 Where are you going?( ),what are you doing there?Im going sightseeing .请问那个空里添什么句子? there are three 什么in the city how many books are there 答什么 Are you there这句话什么意思 There are some m___laboratories空格填什么 Are there any music rooms?回答说什么 There are什么hours in a week there are ------many good books there.划线出填什么 请问There are与There is有什么区别 There 什么 on zhe desk ?There are some books. there are 句型中there 作什么成分 there are a l什么number of books there I there auy.和Are there any .有什么差别 there are和here are有什么区别