floor
                    - He didn’t tell me _______.
 - What’s that _____ the floor?—Oh, it’s mycat (猫).[ ]
 - The desks are _____the floor. [ ]
 - The dictionary is ______ the floor.[ ]
 - Which floor do you live____? [ ]
 - The baseball is on the floor, _____the bookcase and the desk.[ ]
 - The baseball is on the floor, ______ the bookcase and the desk.[ ]
 - Where’s the chair? —It’s the floor.[ ]
 - Which floor do you live _________? —The first floor. I live _________ Room 112. [ ]
 - Look at eraser on the floor. Whose is it?