题目内容

As we all know, it was _____ that resulted in the terrible car accident.


  1. A.
    because of her carelessness
  2. B.
    her being careless
  3. C.
    because she was careless
  4. D.
    she was so careless
B
本题可采用减元法,把强调句型中的It was…that…去掉,就不难看出该句缺少主语。Herbeing careless是-ing形式复合结构,在句中充当主语。故选B。
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