Hola chic@s. Aquí os dejo unos ejercicios para que practiquéis los Subject and Object pronouns y los Possessive Adjectives.
http://www.englishexercises.org/makeagame/viewgame.asp?id=5216
http://www.adelescorner.org/grammar/possessive_adjectives/possessiveadjectives.html
http://learnenglishkids.britishcouncil.org/en/grammar-games/possessives
http://www.englishexercises.org/makeagame/viewgame.asp?id=5815
http://www.englishexercises.org/makeagame/viewgame.asp?id=1965
http://www.englishexercises.org/makeagame/viewgame.asp?id=2873
http://www.turtlediary.com/grade-3-games/ela-games/choose-correct-possessive-pronoun.html
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-26972.php
http://www.learnenglish-online.com/grammar/tests/possessiveadjectives.html
http://www.learnenglish-online.com/grammar/tests/possessiveadjectives2.html