◎ 题干
If there's a lot of work _____, I'm happy to just keep on until it is finished.

A. to do
B. to be doing
C. done
D. doing
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“If there's a lot of work _____, I'm happy to just keep on until it is finished. [ ]A. to do B. to be doing C. done D. doing …”主要考查了你对  【不定式】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。