河南成教 / 综合英语(三)
正确率:100%
2、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
A. which to base on
B. to base on
C. to be based on
D. on which to base
参考答案:
佳题速递: