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问题: We all know radio and television can keep ______what is going on in the world.

We all know radio and television can keep ______what is going on in the world.
A. informing us of
B. informed us of
C. us informed of
D. informing on

解答:

答案选c 这个题目考察keep的使动用法
keep sb doing /done: 使某人做某事或者被作某事,如果动作是sb 发出用doing,如果sb 是动作的承受者,用done
因为是我们被告知,所以应该选择keep sb done
inform sb of sth这是固定的搭配,所以答案选keep us informed of