Will and going to

https://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future.htm

https://elt.oup.com/student/solutions/preint/grammar/grammar_06_012e?cc=mx&selLanguage=en

https://www.ejerciciosinglesonline.com/new-exercises/ex2-will-vs-going-to/

https://agendaweb.org/verbs/future-simple-exercises.html