THERE IS / THERE ARE

http://www.saberingles.com.ar/curso/lesson05/05.html


http://first-english.org/english_learning/english_beginners/there_is_there_are/01_there_is_exercises.htm

http://first-english.org/english_learning/english_beginners/there_is_there_are/05_there_is_there_are_exercises.htm

http://first-english.org/english_learning/english_beginners/there_is_there_are/06_is_there_are_there_questions_exercise.htm
http://first-english.org/english_learning/english_beginners/there_is_there_are/08_is_there_questions_exercises.htm

http://first-english.org/english_learning/english_beginners/there_is_there_are/09_is_there_learning_exercises.htm