【题目】When effectively _______, the feedback we share with students or employees can develop their awareness of their own learning.
A. managing B. being managed
C. managed D. to manage
在线课程【答案】C
【解析】试题分析：主语the feedback和动词manage之间是动宾关系，要用过去分词managed作状语，本处相当于一个条件状语从句when the feedback is effectively managed，故选C。