The room is Bill's and Mike's.那里错了?

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• The room is Bill's and Mike's.那里错了?
• 英语：词汇练习,根据句意及首字母或汉语提示完成下列句子.1.-Is his h_____taking photos or collecting stamps?-Neither.It's watching TV.2.Mike,you've s_____too much time watching TV.You'd better turn it off.3.It is not as difficult as you i_____.4.If you want to keeo yout room clean and t_____,it must be cleand every day.5.This boy showed his stamp_____(收藏)to me.6.Bill is_____(懒惰).By the time he should go to school,he's still in bed.7.Why not go_____( 驾驶帆船)with us in the sea?8.It i
• 英语根据对话从括号选择正确的词填空Mike:1._______is this box at the door?(Who’s ,Whose)Is this _____,Bill?(your,yours)Bill:No.3_______box is light,and this (Mine,My)One is heavy.I think it’s 4________ (Tom’s Tom )Mike:Excunse me,Tom.Is this 5_______box?(your ,yours)Tom:Oh,yes,it’s 6________> ( mine,my)Mike:You 7_______put it here.(can,can’t )You must put it in 8______room.( you,your)Tom:9______are right.But it’s heavy.(You ,Your)I can’t carry it.Mike:Let 10______help y
• 甲乙两车分别从东西两站同时出发相向而行,相遇后原速前进到达对方出发地后,立即返回,途中第二次相遇,已知甲车时速是每小时40千米,乙车速度是32千米每小时,两次相遇地点间距80千米,求东西两站的距离?
• 因式分解：ax²+by²-a²y-b²x+13abxy