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    【题目】Simon made a big bamboo box __________ the little sick bird till it could fly.

    A. keep

    B. kept

    C. keeping

    D. to keep

    【答案】D

    【解析】句意：Simon做了一个大的竹盒子，用来装那只生病的小鸟，直到它能飞。考查非谓语动词。从语境看，这里用不定式作目的状语，因此选D。

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