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题目
As we all know,the whole life of the doctor____studying the origin of cancer
A has devoted to B was being devoted to C was devoted to Dhas been devoted to
选哪个,为什么?每个选项解释下?

提问时间:2020-10-20

答案
选D.sb devote some time to doing sth.某人把时间奉献于做某事.the whole life作主语 应为:some time be devoted to doing (时间被奉献于做某事)现在用的是一般现在完成时,为some time has been devoted to doin...
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