5th Floor No.8 Building是这么念吗?“the fifth floor."

5th Floor No.8 Building是这么念吗?“the fifth floor." 是in the fifth floor还是on the fifth floor 是on fifth floor还是on the fifth floor? I live ___ the fifth floor ____this building. Mr. Smith that building. His house is the fifth floor. 4th floor,Jianglong building,No.2 Wenhe road, on the fifth floor,还是in the fifth floor? The fifth floor ,Room5A是什么意思 on the fifth floor还是on fifth floor his office is on the 8th floor in the classroom building. 1.My friend lives on the fifth floor of the building .(对on t The flat is on the fifth floor.