By the time she_____体操比赛上 at the New York Good Will Games, she_________ a dedicated junior gymnast for eleven yearsA.peted , have beenB.petes, had beenC.will pete, has beenD.peted , had been
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D解析考查时态。句意：到她在纽约友好运动会上比赛时，她已经成为一名专业的体操运动员11年了。结合语境可知从句描述的是过去某时的动作，故用一般过去时态。主语描述的是现在持续到现在并将继续进行的动作，故用现在完成时态。选D。