This is a quick quiz (just 15 questions). You should take it if you want to get more confident while speaking English with native people. By taking it, you'll learn some idioms, proverbs, and slang expressions. I suggest that you visit my website www.freeenglishmaterialsforyou.com before taking it. There, you will find a section named "idioms and slang" http://freeenglishmaterialsforyou.com/category/idioms-and-slang/. It's always better to study before taking a quiz, but you could also just try it out to test your knowledge about these topics.