Do you know the difference between the future with BE GOING TO and WILL? Read this: http://www.englishgrammarsecrets.com/goingtoorwill/menu.php

Enter on the internet page: http://www.eflnet.com/grammar/verbtense_index.php and choose the FUTURE PROGESSIVE tense. Do all the exercises.

Enter on http://a4esl.org/q/h/0101/sv-goingto.html and do the exercise

Do this exercise: http://www.better-english.com/grammar/willgo.htm and this http://www.isabelperez.com/happy/tenses/exercises/going-will2.htm