Ben or gone? https://www.ecenglish.com/learnenglish/lessons/been-or-gone

The Adventures of Tin Tin

http://moviesegmentstoassessgrammargoals.blogspot.com.es/2015/07/the-adventures-of-tin-tin-developing.html

GRAMMAR

http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/

http://eslgrammarpractice.blogspot.com.es/

http://www.esl-classroom.com/grammar/gindex.html

http://www.learnamericanenglishonline.com/Yellow%20Level/Yellow%20Level.html

http://www.learnenglish.de/grammarpage.html

http://www.bbc.co.uk/worldservice/learningenglish/grammar/grammar_challenge/

http://www.mansioningles.com/Gramatica.htm

http://www.ego4u.com/en/cram-up/grammar

http://www.englisch-hilfen.de/en/exercises_list/alle_grammar.htm

http://www.autoenglish.org/tenses.htm

Steve Jobs' speech at Stanford University:

http://www.eslvideo.com/esl_video_quiz_intermediate.php?id=9183

http://www.real-english.com/reo/40b/40b-1.htm (subtitles + exercices)