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Professional skills are tools like a kni...

Professional skills are tools like a knife or a hammer. You need ______ to complete the things you want to do.

A.it B.that C.them D.ones

 

C 【解析】 考查代词。句意:专业技能是像刀或锤子这样的工具。你需要它们来完成你想做的事情。分析句子可知,them代指前文的tools。故选C项。  
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Retirement Age

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