https://www.english-grammar.at/online_exercises/word-formation/word-formation-index.htm

Form 6

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

https://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-present

https://www.ego4u.com/en/cram-up/grammar/passive/exercises