Hello everybody!
Here you can practice going to:
https://test-english.com/grammar-points/a1/be-going-to-plans-predictions/3/
More links:
https://agendaweb.org/exercises/verbs/future/going-to-forms
https://agendaweb.org/exercises/verbs/going-to-match
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-write-3
https://agendaweb.org/exercises/verbs/going-to-questions-2
And if you want to practice must and mustn´t, use these links:
https://learnenglishkids.britishcouncil.org/grammar-vocabulary/grammar-practice/modals-must-mustnt
https://www.englisch-hilfen.de/en/exercises/modals/must_not.htm
https://agendaweb.org/exercises/verbs/modals/must.htm
https://agendaweb.org/exercises/verbs/modals/must-exercises.htm
