MAKING WH QUESTIONS IN THE SIMPLE PRESENT:
http://englishexercises.org/makeagame/viewgame.asp?id=1718
MAKING WH QUESTIONS IN THE SIMPLE PAST:
http://www.ego4u.com/en/cram-up/grammar/simple-past/exercises?07
MAKING QUESTIONS IN THE PERSENT CONTINUOUS:
http://tolearnenglish.com/exercises/exercise-english-2/exercise-english-55633.php
