请教英语高手一道高中英语选择题~
Almost80%ofthose_____saidthattheywereagainestthestepstakenbythegovernmentlastweek.
A.surveyB.surveyingC.surveyedD.whosurveyed
答案是C,为什么不选D?详解一下吧~
谢谢!
考察的什么知识点?