第1个回答 2014-01-01
How many hours are there in one day. 或 How many hours are there in a day. 望采纳！
第2个回答 2014-01-01
How many hours are there in one day?或：Several hours everyday
第3个回答 2014-01-01
How many hours do a day contain?
第4个回答 2014-01-01
How many hours a day?