Passiivin preesens:
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-61269.php


Pasiiivin imperfekti:
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-76882.php

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-14231.php

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-59106.php

http://www.eflnet.com/grammar/passive2.php#.VCU6Hlc09J5