The cost of running the library has risen rapidly in recent years, and the library doesn’t have enough money __________ its work.A.doingB.to runC.to continueD.to make
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C解析从对句子结构的分析来看，空格内待填入的词与enough有关，应用不定式，而不用现在分词；从对意义和词性的分析来看，虽然B、C、D三项都可以用作及物动词，但此处应表示“继续工作”的含义，故B、D两项应予以排除。