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Never before ________ a more worrying day.


  1. A.
    have I spent
  2. B.
    did I spent
  3. C.
    I have spent
  4. D.
    I spent
A
A否定词Never开头,句子主谓应部分倒装,故排除C、D两项。never before指的是“在此之前”的时间,与现在有关系,且强调结果,应用现在完成时,不用一般过去时,故弃B选A。
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