Student Talk / 'Composing mail' - written skill problem [12]

from your post , it seems you are having difficulty with grammar . You need to improve grammar before you can properly write something formal like email to your boss etc.

Essays / What is the most important in your life; sport or education? [24]

You need to create a balance between the two. I personally think I being involved in some sports along with education will improve performance in studies also by keeping physically and mentally active.