He thinks that he is so brave that nothing in the world can________him．A.fearB.afraidC.nervousD.frighten
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D解析分析：空格词是动词，意思是“使他害伯”。fear意思是“恐惧”“怕”，是主语对宾语怕，如：The child feared the dog．；afraid(怕)是形容词；nervous(紧张的)也是形容词；frighten sb意思是“使某人害怕”，主语使宾语害怕，如：The dog frightened the child．