PRACTICE TEST FOR PET
http://www.flo-joe.co.uk/preliminaryenglish/
http://www.examenglish.com/PET/index.html
http://englishaula.com/en/pet-exam-cambridge-preliminary-english-test-free-video-lessons-and-exercises.php
http://exams.richmondelt.com/index.php?practice_tests_pet_en