2011ÄêÖØÇì¸ß¿¼Ó¢ÓïÊÔÌ⺬´ð°¸word°æ
21. That price of music sounds quite familiar. Who _________the piano upstairs?
A. has played B. played
C. plays D. is playing
22. It is still under discussion __________the old bus station should be replaced with a modern hotel or not.
A. Whether B. when
C. which D. where