PASSIVE VOICE

http://www.englisch-hilfen.de/en/exercises/active_passive/passive_sentences1.htm

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

https://www.ego4u.com/en/cram-up/grammar/passive/exercises?06

http://www.e-grammar.org/passive-voice/test2-exercise4/

http://www.englishexercises.net/yypassive1.html

 Online practice for KET (A2) and PET (B1)
  E  T
http://www.examenglish.com/KET/KET_listening.html
http://olpt.s3.amazonaws.com/online-practice-ket/index.html
http://www.englishaula.com/en/ket-exam-cambridge-key-english-test-free-video-lessons-and-exercises.php
http://exams.supadu.com/students-area/target-ket/online-practice-tests/
http://jesvasar.weebly.com/ket-pet-free-online-practice.html


   E  T
http://www.examenglish.com/PET/
http://olpt.s3.amazonaws.com/online-practice-pet/index.html
http://www.englishaula.com/en/pet-exam-cambridge-preliminary-english-test-free-video-lessons-and-exercises.php
http://exams.supadu.com/students-area/target-pet/online-practice-tests/
http://jesvasar.weebly.com/ket-pet-free-online-practice.html