They are ______ at the _______ news.A.frightening, frightenB.frightened, frighteningC.frightening, frighteningD.frightened, frightened
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B解析试题分析：句意，他们害怕这个令人恐惧的消息。frightened指人“对……害怕”；frightening指物本身“令人害怕”，故选B。考点：frightened与frightening用法的比较
点评：解答此类题型一定要掌握各个选项的基本用法，总结类似用法的词，例如interested 与interesting。-ed主语使人，-ing主语是物。