Q:

She said, " I am sorry, I am not able to submit those papers ". 

• 1
  She apologized for not being able to submit those papers.
• 2
  She exclaimed with sorrow that she was sorry and she will not be able to submit those papers.
• 3
  She said she was sorry , she is not able to submit those papers.
• 4
  She said that she was sorry and she will not be able to submit those papers.