of the 2000 stock investors_____last month,90% were found___in financial knowledge.

题目

of the 2000 stock investors_____last month,90% were found___in financial knowledge.
A surveyed ,lacked B having been surveyed,to lack C surveyed,lacking D to have been surveyed,lack
the answer is C,

答案

在上个月调查的的2000名股票投资者中,百分之九十的人都被发现缺乏财经方面的知识.
第一个surve是被动的,被调查,第二个lack缺乏是主动的,投资者本身缺乏知识
be found+to do/Ving