---Where are the keys? ---________A. They are in the door.B. It's in the door.
( ) He has two basketballs. One is new, __________ is old.
( ) Bruce, look at your dirty shoes. You’d better __________ them right now.
( ) I met Jack on way home yesterday.
( ) It’s hot __________ summer in Beijing.
( ) The coat _________ the bed isn’t Kate’s. It’s _________