题目内容
The professor could hardly find sufficient grounds _____his arguments in favor of the new
theory.
A. to be based on B. to base on
C. which to base on D. on which to base
D
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题目内容
The professor could hardly find sufficient grounds _____his arguments in favor of the new
theory.
A. to be based on B. to base on
C. which to base on D. on which to base
D