Forms 8a, 8c1, 8c2. Revision on Passive voice

For practicing:
https://www.perfect-english-grammar.com/passive-exercise-1.html;
https://www.perfect-english-grammar.com/passive-exercise-2.html;
https://www.perfect-english-grammar.com/passive-exercise-3.html;
https://www.perfect-english-grammar.com/passive-exercise-4.html;
https://www.perfect-english-grammar.com/passive-exercise-5.html;
https://www.perfect-english-grammar.com/passive-verbs-two-objects-exercise-1.html.
QUIZ: