We'll carry on the work ______ we can get the machines we need. After all, it's the determination that really counts.
A．unlessB．beforeC．whetherD．while
C

試題分析：考查連詞：A. unless除非，引導(dǎo)條件狀語從句，B. before在…前面，引導(dǎo)時間狀語從句，C. whether 是否，引導(dǎo)名詞性從句，或“無論…，不管…”，引導(dǎo)讓步狀語從句，D. while當(dāng)…時候，然而，雖然，句意：--不管我們能不能得到需要的機(jī)器，我們都會開展工作，畢竟決心才是最重要的。選C。
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