We are kept of what is happening in the world by reading newspapers and watching TV.
A. to inform
B. to be informed
C. informing
D. informed
网友回答
A. to inform
B. to be informed
C. informing
(答案→)D. informed
解析：这题考查固定词组：keep sb informed of“及时告知某人”，句意是：通过看报纸看电视我们及时知道世界上发生了什么。选D。