difficulty

I got feedback about my writing assignment from the professor.

She commented, "Your paper is complicated and confusing structure. You should learn how to write more simply and formally. In some part, your sentences are so casual."

.......damn,

I got shocked. That is the barrier between native speaker and non-native speaker.
I need to tighten up my writing skills.

This week I could concentrate on study, which satisfied me.

Next week I will concentrate on study more. I have TOEIC test on next Saturday. I need a certain score.

By the way on our campus, one girl was murdered by someone, which makes me so scary...
I can't believe that it does happen really, seriously/