Children today are still suffering from heavy work,____at preparing them for the entrance examinatio

题目

Children today are still suffering from heavy work,____at preparing them for the entrance examinations to college.
A.aim 　B.aimed 　C.to aim 　D.aims
请老师说说.

答案

be aimed at 是针对.的意思,句子中所填的单词是个非谓语动词,所以省去了be动词