http://www.isabelperez.com/tests.htm

  http://kickme.to/mansioningles

  http://www.ohiou.edu/esl/english/writing/index.html

http://www3.sympatico.ca/jacek_s/magdak/writing.htm

http://www.bbc.co.uk/skillswise/words/writing/

http://www.supercable.es/~lallena/escribir.htm