do and odes

http://www.englisch-hilfen.de/uebungen/zeiten/do2.htm
http://www.englisch-hilfen.de/en/exercises/tenses/do_does2.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=933
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-22439.php
http://www.englishexercises.org/makeagame/viewgame.asp?id=4888
http://www.englishexercises.org/makeagame/viewgame.asp?id=3013
http://www.englishexercises.org/makeagame/viewgame.asp?id=1938