问题补充:
Our manager asked us to keep him of what was going on there.
A. informing
B. to be informed
C. informed
D. being informed
答案:
A. informing
B. to be informed
(答案→)C. informed
D. being informed
解析:考查短语:keep sb informed of 使某人了解……,句意:我们的经理要求我们使他了解那进行的事情。所以选C。