◎ 题干
Alice, you were supposed ________ your paper last Sunday. Why haven't you finished it yet?
[     ]
A. to finishing
B. to have finished
C. finishing
D. having finished
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Alice, you were supposed ________ your paper last Sunday. Why haven't you finished it yet?[ ]A. to finishingB. to have finishedC. finishingD. having finis…”主要考查了你对  【不定式的完成式】  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。