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    【题目】Only then __________ realize I had said the words __________ the feeling of disappointment.

    A. did I; added to B. I; adding to

    C. I did; added D. did I; adding to

    【答案】D

    【解析】句意：直到那时，我才意识到我说了更使人失望的话。Only then放在句首,主句用倒装；中心词words与add之间为主谓关系’因此用现在分词短语作定语。

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