there is a bioom ( ) the door

is there a key to the door there is a door ( )the wall Look There is a cat ( ) the door There is a room ( ) the door. There is a football 单词 the door. There is a boy ( )at the door. There is a dog ____(lie) outside the door a,behind,there,door,is,cat,the(?) 连词成句 There is a bar next door to the station. There is a cap behind the door.改为复数句 The door is ( ) A.there over B.here C.this 可以说there is a knock at the door吗