1.This is __D_ reading-room.
A. the teacher’s B. teacher’s C. teacher’s D. the teachers’
2. Nothing was found but __D_ broken.
A. the room window B. the room’s window C. the room名词
1 of the window D. the window of room
3. How many__D_ would you like?
A. paper B. bread C. pieces of papers D. pieces of bread