Not until I began to work did I realize how much time I______.

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问题 Not until I began to work did I realize how much time I______.

选项 A、wasted
B、have wasted
C、was wasted
D、had wasted

答案D

解析 本句中waste这一动作发生在realize之前,所以应用过去完成时。故选D。
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本试题收录于: 英语题库普高专升本分类
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