Not until I began to work did I realize how much time I______.A、wastedB、have wa

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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

解析这是一道语法题，考点是动词的时态。句子前半部分用的是过去时态，后半部分的动作发生在此之前，因此要用过去完成时。

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