our opinions should___ factsa,base on b.be based on c.base upon d_英语解答

our opinions should___ facts
a,base on b.be based on c.base upon d.ba based

人气：279 ℃　时间：2020-05-19 07:39:30

解答

b.be based on
base on 词组,意思是以...为依据
这里要用被动语态