Repassem...

a/an

http://www.english-4u.de/a_an_ex2.htm

http://www2.arnes.si/~oskplucija4/ces/an.htm


this/that/theses/those

http://www.1-language.com/englishcourse/unit12_grammar_exs.htm

http://www.1-language.com/englishcourse/unit12_grammar_exs2.htm

pronoms personals

http://www.myenglishpages.com/site_php_files/grammar-exercise-personal-pronouns.php#.VNxi6WMRi8c

http://www.my-english.edu.pl/index.php?id=22