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2011届高考英语易错题典型题宝典2
15.The professor could hardly find necessary grounds_______his arguments in favour of the new theory.
A.to be based on B.to base on
C.which to base on D.on which to base
15.The professor could hardly find necessary grounds_______his arguments in favour of the new theory.
A.to be based on B.to base on
C.which to base on D.on which to base
