.
https://www.ego4u.com/en/cram-up/grammar/present-perfect-progressive/exercises
https://www.ego4u.com/en/cram-up/grammar/present-perfect-progressive
https://www.perfect-english-grammar.com/present-perfect-continuous-exercise-1.html
https://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_progressive_mix2.htm