9. There are many students of Grade Thre
问题:
9. There are many students of Grade Three reading in the reading room, most of _________ with their heads buried in their reference books and notebooks.
A.them
B.whom
C.which
D.That
9. There are many students of Grade Three reading in the reading room, most of _________ with their heads buried in their reference books and notebooks.
A.them
B.whom
C.which
D.That