3º ESO: RELATIVE PRONOUNS: EXERCISES

            http://www.englishexercises.org/makeagame/viewgame.asp?id=1255

            http://www.agendaweb.org/grammar/relative_pronouns_clauses-exercises.html

            http://www.englisch-hilfen.de/en/exercises/pronouns/relative_pronouns.htm

https://englishtv.wordpress.com/2010/10/17/relative-clauses-exercises