河南成教 / 大学英语(III)
正确率：100%
3[单选题]
The scientist could hardly find sufficient grounds ______ his arguments in favor of the new theory.
A.which to base on
B.to base on
C.to be based on
D.on which to base
The scientist could hardly find sufficient grounds ______ his arguments in favor of the new theory.
参考答案：
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