As we all know, newspapers, magazines and radios as well as television broadcasts can keep us ________ about what is happening in the world．A.informingB.to informC.informedD.being informed
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C解析考查非谓语动词作宾补。非谓语动词在keep后作宾补常用doing和done的形式，宾补和宾补见间是主动关系，用doing形式，被动关系则用done形式。本题中宾语和补语间是被动关系，因此选C。