Withoutfacts,apersoncannotformacorrectopinion,forhenee...

问题详情：

 Without facts, a person can not form a correct opinion, for he needs to have actual knowledge ______his thinking .

A. on which to be based       B. on which to base         C. which to be based       D. which to base

【回答】

B

知识点：定语从句

题型：选择题