Forms 8a, 8b. Passive voice. Causatives

 For practicing PASSIVE VOICE:

https://www.perfect-english-grammar.com/passive-exercises.html;

https://www.englisch-hilfen.de/en/exercises_list/passiv.htm;

https://agendaweb.org/verbs/passive-exercises.html.

For practicing CAUSATIVES:

https://www.perfect-english-grammar.com/causatives-exercise-2.html.