http://www.ted.com/talks/john_hardy_my_green_school_dream.html

http://www.ted.com/talks/john_hardy_my_green_school_dream.html

Thelma Golden: How art gives shape to cultural change

http://www.ted.com/talks/thelma_golden_how_art_gives_shape_to_cultural_change.html

CONDITIONALS

http://www.englishclub.com/grammar/verbs-conditional_6.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/type_1_statements.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/type_2_statements.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/type_3_statements.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/mix.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/mix3.htm

Arianna Huffington: How to succeed? Get more sleep | Video on TED.com

Arianna Huffington: How to succeed? Get more sleep | Video on TED.com

SEVEN SINS

http://en.wikipedia.org/wiki/Seven_deadly_sins

HAD BETTER X WOULD BETTER

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-61575.php

http://perso.wanadoo.es/autoenglish/gr.better.i.htm