http://www.montsemorales.com/gramatica/Futurewill1.htm
http://adelescorner.org/grammar/will/will_quests.html
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?02
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?03
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?04
http://www.kico4u.de/english/uebungen/aktiv/willfuture.htm
http://www.montsemorales.com/gramatica/Futurewill2.htm
http://www.englishgrammarsecrets.com/willfuture/exercise3.swf
