题目内容

Over two hundred years ________ since the United States ________ in 1776.


  1. A.
    have passed; founded
  2. B.
    has passed; were founded
  3. C.
    have passed; was founded
  4. D.
    has passed; was founded
D
一段时间作主语时被当作整体看待,谓语动词一般用单数;根据结构可判断从句中应用被动结构。
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