THERE IS/THERE ARE EXERCISES

http://www.agendaweb.org/grammar/there-is-there-are/index.html
http://www.adelescorner.org/grammar/there_is/thereis.html
http://first-english.org/english_learning/english_beginners/there_is_there_are/01_there_is_exercises.htm
http://www2.arnes.si/~oskplucija4/ces/thereisare.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=5272