—Li Feng won the first prize in the national English petition.—Oh，really？I’m glad that her efforts at last________.A.worked outB.got backC.paid offD.turned out
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C解析动词短语辨析。A锻炼，制定出；B回去，追溯；C努力得到回报；付清；D结果是，原来是，证明是；结合句意可知C正确。句意：—李峰在全国英语大赛中获得了一等奖。—真的吗？我很高兴她的努力得到了回报。