The professor can hardly find sufficient grounds his argument in favor of the theory.
A.which to base on |
B.on which he bases |
C.to base on which |
D.which to be based |
推荐套卷
The professor can hardly find sufficient grounds his argument in favor of the theory.
A.which to base on |
B.on which he bases |
C.to base on which |
D.which to be based |