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By the time she_____體操比賽上 at the New York Good Will Games, she_________ a dedicated junior gymnast for eleven years. 
A．competed , have beenB．competes, had been
C．will compete, has beenD．competed , had been
D
考查時態(tài)。句意：到她在紐約友好運動會上比賽時，她已經成為一名專業(yè)的體操運動員11年了。結合語境可知從句描述的是過去某時的動作，故用一般過去時態(tài)。主語描述的是現在持續(xù)到現在并將繼續(xù)進行的動作，故用現在完成時態(tài)。選D。
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