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    Though he worked in hope of finding the answer,he sometimes lost heart. A. the,the B. the, / C. /, a D. a, / 【查看更多】

     

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    Though he worked in ________ hope of finding the answer , he sometimes lost ________ heart.


    1. A.
      the ; the
    2. B.
      a; /
    3. C.
      /;a
    4. D.
      the; /

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