Avoir, Être, Aller & Faire:
http://www.tapis.com.au/studentbook1/unit2/u02_grammaire_a01.html
http://fog.ccsf.edu/~creitan/q1etre.htm
http://www.librosvivos.net/smtc/PagPorFormulario.asp?TemaClave=1034&est=2
http://fog.ccsf.edu/~creitan/qchap3a.htm
http://www.tapis.com.au/studentbook1/unit11/u11_grammaire_a01.html
http://storage.canalblog.com/03/97/356863/18430151.htm
http://fog.ccsf.edu/~creitan/q1etre.htm
http://www.librosvivos.net/smtc/PagPorFormulario.asp?TemaClave=1034&est=2
http://fog.ccsf.edu/~creitan/qchap3a.htm
http://www.tapis.com.au/studentbook1/unit11/u11_grammaire_a01.html
http://storage.canalblog.com/03/97/356863/18430151.htm