For those who had problems in saving Quiz 4 or any other problem you can make the Quiz tomorrow 17 May 2012, it will be opened from 5pm to 5:30pm.
Quiz 2 will be opened on Friday 18 May 2012 from 4pm to 4:30pm.
Quiz 3 will be opened on Friday 18 May 2012 from 5pm to 5:30pm.