2. 外语
  3. Not until I began to work______ how much time I had wasted.

Not until I began to work______ how much time I had wasted.

admin2015-05-21  9
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
D、I realize
答案B
解析 本题考查倒装结构的用法。not until引导的时间状语从句，后面的主语要用倒装结构。原先的顺序应该是I did not realize that how much time I had wasted until I began to work．故正确的答案为B。
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