Life of a student teacher

It's been almost a week.
I go to my school every day.
Though I work only 3 hours a day, the work is heavy.
We, the student teachers there, assorted and distributed books these days.
There're about 2000 students in the school.
That's how the big school do every year when the school is about to start.
Tough work sparkled the permanent existence of the student teachers.

Finally the substitution almost comes to an end.
The taste of being a teacher will be like how I feel as a substitute teacher in Seeds.
Teaching with saying a lot becomes a killer of my throat.
I don't know the reason that hurts my voice.
Is it that I am just not accustomed to lecturing or I am not suitable to lecturing.
Who knows! I will try to conquer the problem.