Relier Pairs LanguageVersion en ligne Idioms par Fernando T. 1 Cost an arm and a leg 2 Hit the sack 3 A piece of cake 4 It’s raining cats and dogs 5 In hot water 6 Butterflies in my stomach 7 I am under the weather 8 My blood is boiling 9 A couch potato Nervous and anxious I am very angry! Go to sleep! Very easy! A person who doesn’t have an active life To be in difficulties Something that you say when it is raining heavily I am sick! Very expensive