PRESENT CONTINUOUS TENSE

http://home.nordnet.fr/~rmaufroid/pupitre/houses/inthekitchen.htm

http://enjoyenglish.free.fr/english/college/ing6/pages/ing1.htm

http://www.english4all.pro.br/students/exercises/L1/whataretheydoing.htm

http://www.agendaweb.org/exercises/verbs/present-continuous.htm

http://www.montsemorales.com/vocabulario/VerbsSpot1-4.htm

http://www.englisch-hilfen.de/en/exercises/tenses/present_progressive_statements_contracted.htm