Forms 6a, 6c. Future forms

 For practicing:

https://test-english.com/grammar-points/b1/future-forms/;

https://test-english.com/grammar-points/b1/future-forms/2/;

https://test-english.com/grammar-points/b1/future-forms/3/;

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-6874.php;

https://www.english-4u.de/en/tenses-exercises/future.htm.