7、 I had been looking for the book for two days _____ I found it at last

  A. until         B. when            C. before           D. while

7、C

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科目：高中英語(yǔ) 來(lái)源：江蘇省2010-2011學(xué)年高三英語(yǔ)一輪過(guò)關(guān)測(cè)試（2） 題型：單項(xiàng)填空

 I had been looking for the book for two days _____ I found it at last

  A. until                            B. when            C. before           D. while

 

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