useful 100 vocabulary list

http://drdianehamilton.wordpress.com/2011/07/22/top-100-vocabulary-words-that-adults-should-know/

http://www.world-english.org/tests-16.htm

http://www.world-english.org/improve_vocabulary_advanced.htm

http://www.scientificpsychic.com/grammar/english-vocabulary.html

http://www.englishpage.com/conditional/presentconditional.html