Do not let this happen to you. 
Exams are not just meant to give you a grade but to learn from them.
Here follow some of the exams you took in pdf (Exams 2, 4). Check how you did. We have already revised them together but you might prefer to go through it at home. Give your teachers feedback if there are parts of the paper you still do not know how to do.
Bla, bla, bla 4 