FUTURE TENSES

http://www.englishgrammarsecrets.com/goingtoorwill/exercise2.html

http://www.englishgrammarsecrets.com/goingtoorwill/exercise4.html

http://www.englishpage.com/verbpage/verbs18.htm

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

http://www.englishexercises.org/makeagame/viewgame.asp?id=9020

https://elt.oup.com/student/solutions/int/grammar/grammar_05_022e?cc=global&selLanguage=en

http://testyourenglish.org/test-59