Let's revise question words to imrpove our basic comprehension in English. First, read the theory, and then do the exercises. Copy the sentences in exercises 1 and 2 on your notebook and the marks you get (%). Then, play the game and improve you skills!
Exercise 1: http://www.englisch-hilfen.de/en/exercises/questions/question_words.htm
Exercise 2: http://www.englisch-hilfen.de/en/exercises/questions/question_words2.htm
Online exercise: http://www.english-zone.com/grammar/questions2.htm