It ’s well-known that information is very important to businessmen.
A. having collected
B. collecting
C. collected
D. collect
网友回答
A. having collected
(答案→)B. collecting
C. collected
D. collect
解析： 考查动名词做主语，谓语动词用单数，此题中It为形式主语，真正的主语是that后面的从句。句意：收集信息对商人来说是非常重要的这个大家都知道。故选B。