F7 Passive

https://agendaweb.org/exercises/verbs/passive-voice/active-passive-1 

https://agendaweb.org/exercises/verbs/passive-write-1 

https://agendaweb.org/exercises/verbs/passive-voice/passive-1 

https://www.montsemorales.com/gramatica/Passivpast1.htm 

https://www.english-4u.de/en/grammar-exercises/passive.htm