It's pretty obvious what to do. Click the answer you like better. Click the skip button in the bottom right if you can't decide. The number in the bottom left tells you what question you're on. There are 50 questions.
According to the comments, here's the score so far: Red: 1531 Blue: 1874 Comment your score! Yes, misspelling 'misspell' was a joke. #all #all #all #all #all #all #all #all #all #all #all #all