He isn’t a man who knows _____ to deal with people properly, but he does know _____ to do with all kinds of papers in front of himA.what, whatB.what, howC.how, whatD.how, how
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C解析试题分析：句意，他是一个不知道怎样正确处理和人交往的人，但他却知道怎样处理面前各种各样的报纸。Deal是不及物动词，to deal不需要逻辑宾语，所以前面用关系副词how.do是及物动词，to do需要逻辑宾语，故用关系代词what.故选C.考点：考查宾语从句的引导词。