Dear Alieen,
I'm sorry to hear that you have some problems.
You had an argument with your friend.It's fine as long as you think what you did is correct.Friendship can't be broken because of different opinion.She will come back when she realize her mistake.
Last week's English test is very tough,most students did not get good result,you will achieve good grade next time as far as you study hard,prepare yourself well before the exam and do it carefully during the exam.
Yours;
Alice