there are 24 hours a day还是in a day

there are 24 hours a day还是in a day ( ) ( )hours are there in a day? There are[ ]hours in a day There are （ ）hours in a day.用数词填空 How many hours are there in a day? There are _________ hours in a day.答案用twenty还是twenty-four呢?这 There are ( )hours of sunlight a day how many hours are in a day There are 24 hours in a day这句话中主语等各是什么 分析下 连词成句问题：are,in,there,day,a,24,hours There are 365 days in a year.We sleep 8 hours a day,so we ha There are 365 ( )in a year.We sleep 8 hours a day so we have