---What a large and bright room !  Is it a classroom?

---No, It  _____  the students’ reading-room

1. A.
   refers to
2. B.
   stands for
3. C.
   is supposed to be
4. D.
   is meant for

---What a large and bright room !  Is it a classroom?

　  ---No, It  _____  the students' reading-room.

    A. refers to      B. stands for   

    C. is supposed to be      D. is meant for