HERE YOU HAVE SOME SUGGESTIONS,

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http://www.examenglish.com/PET/reading1.htm

http://www.examenglish.com/PET/?gclid=CJHXrJiinLICFQQGnQodMRQAiw

http://www.cambridgeesol.org/exams/pet/index.html

http://www.britishcouncil.org/spain/preliminary-english-test-pet

http://www.english-online.org.uk/petfolder/pethome.php?name=Practice%20for%20the%20Preliminary%20English%20Test

http://www.examenglish.com/index_es.php

http://ebookee.org/PET-PREPARATION-AND-PRACTICE_1041998.html