at our flat.为什么用at而不是in?不应该是在公寓里面吗?

at our flat.为什么用at而不是in?不应该是在公寓里面吗? we have moved------- our new flat.A.to B.at C.of D.at 请教在英语里说住在什么什么栋几号房,为什么要用介词in而不用at?如;“We live in Flat 707,Block D.”我想用at应该更加正确吧? We havr decided to move to our flat --- next monthA at B on C / D at 写出理由 Then you should change to the No.108 bus at Liyuan Stop,为什么要用at,而不能用to? 为什么at home 不加the 而at the race加the? I saw Boys at the cinema 为什么用both the 而不　I saw Boys at the cinema 为什么用both the 而不用the several?单句 选择题 there is a playground at our school为什么用at 不用in There are three b___ in our flat ,so we can have a nice shower at the same time. people less than 18___play games at internet bars.A can't B may not C mustn't D needn't2.could you please tell me___?A where our new flat is B how far our new flat wasC how can we get to our new flat D when was our new flat built3.i'll finish this wo 为什么at mid-autumn用at而on May day用on? at half past seven为什么前面用at而不用on,in,to I studied at a middle school.为什么用at而不用in? We were surprised at his words.中为什么用at而不用by? 为什么要用at,而不用其他介词 at our great the的用法.为什么at church ,at school ,at home .而 at the offic,at the butcher‘s了. There are six policemen standing at the school gate这是个选择题为什么用policemen而不能用police