how to prepare for an exam?

if you want to study English at home here are the websites you may find useful:
https://imagestack.wordpress.com/tag/test-leksykalno-gramatyczny/
http://www.e-nglish.net/
http://www.engly.pl/
http://e-testy.pl/sklep/testy-gimnazjalne
http://www.e-ang.pl/test.php

source http://www.educartis.com/blog/test-taking-strategies-exam-day/

have a nice time studying!