Ответ:

  1. No, I’m not.
  2. Yes, I am. / No, I’m not.
  3. Yes, I am. / No, I’m not.
  4. Yes, it is. / No, it isn’t.
  5. Yes, I am. / No, I’m not.
  6. Yes, I am. / No, I’m not.

Answers to questions 2–6 depend on the situation.