Not until I began to work ________how much time I had wasted．
- Adidn’t realize
- Bdid I realize
- CI didn’t realize
问题
Not until I began to work ________how
参考解析：
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．
分类：公共英语,外语考试
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