in this report there are still a lot of details___

题目

in this report there are still a lot of details___
to be cleared up being cleared up why?

答案

to be cleared up
句子的意思是,报告中还有许多细节需要被清理
表示需要被清理,还没被清理,所以要用to
如果需要用being来表示正在被清理的话,整个句子需要这么写：
in this report there are still a lot of details that are being cleared up.that are需要被加进来,因为are必须在being前面,以表示它正在进行