KET online exercises SIMCE 2012

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

http://www.usingenglish.com/comprehension/key+english+test.html

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

http://www.grammarbank.com/english-for-beginners.html