EXERCISES

You can practice PASSIVE here:
https://www.ego4u.com/en/cram-up/grammar/passive/exercises?present-perfect
http://first-english.org/english_learning/english_active_passive/44_passive_present_perfect.htm
https://elt.oup.com/student/solutions/preint/grammar/grammar_10_022e?cc=ec&selLanguage=en
http://www.perfect-english-grammar.com/passive-exercise-1.html
http://www.english-grammar.at/worksheets/passive_voice/passive_voice.htm