hi guys, long time no see...
here are some links to review relative clauses and practise a bit.
http://www.ego4u.com/en/cram-up/grammar/relative-clauses
http://www.usingenglish.com/quizzes/234.html
http://www.myenglishpages.com/site_php_files/grammar-exercise-relative-clauses.php#.Uu9x-T1dUoE
http://www.rainschool.com/school-of-english/writing-training-levels-3-5/proficiency-writing/english-practice-exercises-relative-clauses-summary-p6-02w/