Hi Sara! 1:To only think about One Thing -Often said about Guys ^^ 2: To grow up in a bad area or the place the person was raised in made them a bad person 3: When things are hard, the best people do something about it! I hope this explains these for you but please ask me for more help if you need it :)

1. http://www.urbandictionary.com/define.php?term=one+track+mind 2. http://www.urbandictionary.com/define.php?term=grow+up+on+the+wrong+side+of+the+tracks We see that it can't be defined in the Urban Dictionary. Be careful when using this dictionary; it's not always accurate and can get you into trouble. To grow up on (not in) the wrong side of the tracks means that you grew up in a poor or bad part of the city. Number three is more of a proverb and you should be able to understand it; it's not an idiom and its meaning is clear if you understand the words. You should be using an English only dictionary now if you are asking such advanced questions and you should know what "tough" means. I hope you know this word, it's a good one, we use it a lot! Good luck to you!