Here you are a nice bunch of exercises to practise "going to".
Click on the picture and then on the links:
http://www.englishgrammarsecrets.com/goingtofuture/exercise2.swf
http://www.englishexercises.org/makeagame/viewgame.asp?id=5336
http://www.autoenglish.org/going.htm
http://inglesnanet.com/grammar/goingto.htm
http://www.kico4u.de/english/uebungen/5klasse/goingto2.htm
