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
解析
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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
解析