Difficulties in life and loneliness in the heart have made me shaken about my choice. Whenever I worry about eating, or miss my mother, I can only call, I really regret my impulse choice. But think about it after all It's my own decision, but it's only half a year, it can be quite good! But soon, seeing the improvement of the English results of these rural children, one by one, the children who dropped out of school returned to the classroom, I think I found a favorite Feeling here. The author's most likely identity is:. ['Primary school teachers.', 'Youth volunteers.', 'Reporter.', 'Young village cadres.']