If I were a doctor, I would develop a medicine that can cure all diseases.
If I were a doctor, I would cure all the sick people in the world and not let the relatives of the dead be sad.
If I were a doctor, I would work with nurses to develop a medicine that can make patients recover.
If I were a doctor, I would open a hospital for free treatment, so that more patients would not be worried because they had no money and could not get better treatment.