Song Worksheet: Who Knew by Pink

There you are a worksheet based on the song "Who Knew" that can be used to work on  past simple. I'm currently working on a website (http://songstolearnenglish.wordpress.com) gathering contemporary songs workable in the classroom with learners aged 12 to 15. I would be very grateful if you could rate it and give comments so that I can keep on improving it! :-)