http://www.englishexercises.org/makeagame/viewgame.asp?id=5272


http://www.englisch-hilfen.de/en/exercises/various/there_is_there_are.htm

http://www.myenglishpages.com/site_php_files/grammar-exercise-object-pron

http://www.englisch-hilfen.de/en/exercises/tenses/have_got.htm