Why don’t you click on these pages and revise for the exam?
Here you’ll find explanations on various aspects of English Grammar. http://www.englisch-hilfen.de/en/inhalt_grammar.htm
You can practise your English grammar and vocabulary skills with interactive tests on these free websites.
Quizzes, tests, exercises and puzzles to help you learn English as a Second Language (ESL). http://a4esl.org/
English On-line This web site is for people studying English as a Second Language (ESL) or English as a Foreign Language (EFL). There are quizzes, word games, word puzzles, proverbs, slang expressions, anagrams, a random-sentence generator and other computer assisted language learning activities. http://www.manythings.org/
Learn English using in-depth English tutorials featuring dozens of interactive exercises: http://www.englishpage.com/ The Reading Room offers Free On-line Newspapers, Magazines, Books and Literature and more free readings.
100 free short English stories for ESL learners with listening, grammar, comprehension, and dictation exercises http://www.rong-chang.com/qa2/
Hundreds of free exercises to learn English online: grammar, vocabulary, verbs, songs and videos. http://www.agendaweb.org/
English grammar and vocabulary exercises grouped by topics. http://www.nonstopenglish.com/allexercises/
Free English grammar and vocabulary worksheets and printable handouts, for English language and English as a Second Language (ESL) http://www.usingenglish.com/handouts/
English Grammar Help – Rules, Worksheets, Games, Quizzes, Exercises
Do you know English Basic Grammar?
Free English Tests http://www.english-test.net/