GOING TO
https://agendaweb.org/exercises/verbs/going-to-write
https://agendaweb.org/exercises/verbs/going-to-write-2
https://agendaweb.org/exercises/verbs/future/going-to-interrogative-forms
https://agendaweb.org/exercises/verbs/going-to-questions-2
https://agendaweb.org/exercises/verbs/future/going-to-negative-forms
https://www.englisch-hilfen.de/en/exercises/tenses/going_to_future_statements.htm
WILL
https://agendaweb.org/exercises/verbs/future/will-forms - will future
https://agendaweb.org/verbs/future-will-exercises.html
WILL/GOING TO
https://agendaweb.org/exercises/verbs/future/will-going-to-1
https://agendaweb.org/exercises/verbs/future/will-going-to-2
https://agendaweb.org/exercises/verbs/future/will-going-to-3