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    We'll carry on the work ______ we can get the machines we need. After all, it's the determination that really counts.

    A．unless B．before C．whether D．while

    C

    解析试题分析：考查连词：A. unless除非，引导条件状语从句，B. before在…前面，引导时间状语从句，C. whether 是否，引导名词性从句，或“无论…，不管…”，引导让步状语从句，D. while当…时候，然而，虽然，句意：--不管我们能不能得到需要的机器，我们都会开展工作，毕竟决心才是最重要的。选C。
    考点：考查连词

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