http://www.eclecticenglish.com/grammar/PresentContinuous1I.html

WH Questions

http://www.englishexercises.org/makeagame/viewgame.asp?id=5283

http://www.englishexercises.org/makeagame/viewgame.asp?id=2066

http://www.englisch-hilfen.de/en/exercises/questions/question_words.htm

http://www.englisch-hilfen.de/en/exercises/questions/question_words2.htm

http://www.englisch-hilfen.de/en/exercises/questions/form.htm