I would use the comma in both cases.
Student or Learner
- Gabriella comes to the room with a letter from John(,) addressed to Hailey.
- Gabriella comes to the room with a letter from John(,) which is addressed to Hailey.
I wrote two sentences. I would like to ask if commas in the sentences are necessary or not.
Last edited by ademoglu; 16-Oct-2014 at 14:53. Reason: changed to 'addressed'
So would I. (Note — addressed)