Here are some sample activities for the test. Do these and more

Listening:

http://www.examenglish.com/PET/pet_listening_part1.htm

http://www.examenglish.com/PET/pet_listening_part2.htm

Vocabulary:

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

Reading
http://www.examenglish.com/PET/pet_reading1.htm

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

http://www.examenglish.com/PET/pet_reading2.htm

Writing

http://www.examenglish.com/PET/PET_writing_part1.htm