As high school students, it’s very important to keep ourselves of what’s happening home and abroad every day.
A. to inform
B. informing
C. informed
D. be informed
网友回答
A. to inform
B. informing
(答案→)C. informed
D. be informed
解析：考查非谓语动词。本题考查keep sb. informed of sth让某人随时了解。句中用过去分词作宾语补足语，故选C。