题目内容

Mrs.Green doesn't work ________ Mrs.Brown.


  1. A.
    more carefully as
  2. B.
    so carefully as
  3. C.
    so carefully than
  4. D.
    as careful as
B
习惯用法“not as+形容词/副词+as”等同于“not so+形容词/副词+as”,本句要修饰动词“work”,必须用副词,所以正确答案是B.
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