Relacionar Columnas COMMON IDIOMS IN ENGLISHVersión en línea A short list of common idioms in English. por kepa olaizola garcia 1 Break a leg. 2 Hit the nail on the head. 3 Take it easy. 4 Costs an arm and a leg. 5 You can´t judge a book by its cover. 6 Sleep on it. 7 Let the cat out of the bag. 8 Piece of cake. 9 When pigs fly. 10 Hit the books. Something is very easy. Something that is precisely right. Something will never happen. You shouldn´t decide upon something based just on outward appearances. To study. Something is very expensive. Relax To think. To disclose a secret that was supposed to be kept. Good luck.