Without facts,we cannot form a valuable opinion,for we need to have factual knowledge____our thinking.
1.which to be based on
2.which to base upon
3.on which to be based
4.upon which to base
请选择,并帮忙恢复语序,谢谢!
人气：364 ℃ 时间：2019-12-06 17:58:11
解答
4 upon which to base 首先根据英语从句的使用习惯,如果分句中的词组不是具有与字面意义不同的特殊意义或是非常固定不能拆开（如：take care of,look down upon）的话,一律吧词组中的介词放到关系代词前.所以1和2排...
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