I do not choose to learn from the teacher now, because I think if I learn in my classes now, I can work is in addition to being a teacher. The future is uncertain.
I'm not a teacher now. Because I think if I chose to study in the school where I live now. I can work in a variety of teachers. The future is uncertain
I choose to study teacher from now on. Because I thought if I choose to study in the university I study now. I can work in a variety of other than being a teacher. The future is uncertain.