class 8: negative questions

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-80362.php

active or passive?

Click the links. They provide free online exercises to practise active/passive structures.

passive structures only:
https://test-english.com/grammar-points/b1/active-passive-voice/
https://agendaweb.org/verbs/passive-voice-exercises.html
https://www.english-grammar.at/online_exercises/passive-voice/pa001-passive-voice-sentences.htm
https://www.englisch-hilfen.de/en/exercises/active_passive/word_order.htm
https://www.englisch-hilfen.de/en/exercises/active_passive/questions.htm
https://www.englisch-hilfen.de/en/exercises/active_passive/objects_tenses.htm

active or passive?
https://www.englisch-hilfen.de/en/complex_tests/passive2/index.php