http://www.vocabtest.com/ http://www.english-online.org.uk/course.htm?name=beg&link=begcourse.htm http://www.webbusca.com.br/atlas/paises_lingua_inglesa.asp
http://www.merriam-webster.com/

http://mytest.vocabtest.com/vocabulary_word_test.php?tid=78420