Oh, boy, why are you killing your time this way? Can’t you find something _____ doing? 
A．usefulB．worthyC．valuableD．worth
D

試題分析：考查形容詞;A. useful有用的，B. worthy值得的，be worthy of being done/to be done,C. valuable有價值的，D. worth值得的，be worth doing,值得做，worth做后置定語修飾something，句意：哦，孩子，為什么這么消磨時間？難道沒找到值得做得事情嗎？選D。
點評：做有關(guān)形容詞的辨析題，一要弄清楚句意，二要知道供選答案的意思。
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