KET AND PET PRACTICE

KET:

http://www.examenglish.com/KET/KET_grammar.htm

http://www.englishaula.com/en/ket-exam-reading-and-writing-cambridge-key-english-test-video-lessons-practice-tests-exercises.php

http://www.english-online.org.uk/ketfolder/kethome.php?name=Practice%20for%20the%20Key%20English%20Test

PET:

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

http://www.englishaula.com/en/pet-exam-cambridge-preliminary-english-test-free-video-lessons-and-exercises.php

http://www.flo-joe.co.uk/preliminaryenglish/