Revision:
Future perfect simple and continuous
https://test-english.com/grammar-points/b1-b2/future-continuous-and-future-perfect/
https://www.myenglishpages.com/english/grammar-exercise-future-perfect.php
https://www.eltbase.com/quiz/048_01.htm
https://www.englishpage.com/verbpage/verbs26.htm
