1. After entering school, I will study Japanese harder and try to take the N 1 exam. If I have time, I will try to do a part-time job, and listen to my predecessors to say that this can improve my oral English and enable me to enter Japanese society and learn more about Japanese culture.

I like Japan very much, so I will take the Japanese inaugural exam after graduation. Or you can say that in order to work in Japan in the future, I will go to college after graduation to further improve my Japanese and professional level.

It doesn't matter. Don't take the volunteer letter seriously. This is just a formality.