EXTRA ACTIVITIES: PRESENT SIMPLE AND PRESENT CONTINUOUS

http://www.eclecticenglish.com/grammar/PresentContinuous1F.html

http://www.agendaweb.org/verbs/present_continuous-exercises.html

http://www.isabelperez.com/happy/tenses/present_cont.htm

http://www.englishpage.com/verbpage/presentcontinuous.html