To prove the new theory,the scientist needs to find some grounds __his argument.

To prove the new theory,the scientist needs to find some grounds __his argument.
A which to be based on
B on which to base
C which to base on
D to which to base on
英语人气:468 ℃时间:2019-09-05 08:41:43
优质解答
A 以什么什么为基础 一定是用被动语态 那些词的位置颠倒了一下 故意迷惑人的
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