正确形式填空There is a __(hide)door in this wall.They might find i

正确形式填空
There is a __(hide)door in this wall.They might find it out and get our of the room.
The suitcase id __(useful)_it has a hole in it.
Mr.Black looks serious ;he __(rare)smiles.
The __(speak) of my radio is broken.I'm going to have it repaired this afternoon.
That __(calculate) is too expensive,isn't it?
There are a few __(judge)in the court.
The __(high) of the tower is about 100 metres.
Ifeelthe summers are __(hot) than they used to be.
There are usually two __(battery) in this kind of flashlight.