Not until I began to work______how much time I had wasted.

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问题 Not until I began to work______how much time I had wasted.

选项 A、didn’t realize
B、did I realize
C、I didn’t realize

答案B

解析本题考查句子的部分倒装结构。当not…until置于句首时，句子要使用部分倒装，即将谓语的一部分如助动词或情态动词放在主语之前。如果句中的谓语没有助动词或情态动词，则需添加助动词do，does或did，并将其置于主语之前。本句正常语序为：I didn’t realize how much time I had wasted until I began to work．

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本试题收录于：公共英语一级笔试题库公共英语（PETS）分类