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After ________in the research for so many years,the scientist succeeded in finding the result at last.


  1. A.
    buried
  2. B.
    being buried
  3. C.
    having buried
  4. D.
    having been buried
D
试题分析:考查动名词用法。动名词的通常放在介词后后面。当动名词的动作发生在谓语动词之前的时候,使用完成式。惊讶:在致力于研究工作很多年以后,这位科学家终于成功找到了一个解决的方法。根据句意说明多年的研究工作是在找到答案之前就发生的。故使用完成时。而本句是一个固定词组be buried in…致力于…
考点:考查动名词用法
点评:动名词的通常放在介词后后面。当动名词的动作发生在谓语动词之前的时候,使用完成式。同时也要注意动名词的复合结构。
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