Matching Pairs IdiomsOnline version Some idioms by Catalina Rojas Trujillo 1 Cross your fingers 2 Gut feeling 3 Speak of the devil 4 Ring a bell 5 Once in a blue moon 6 By the skin of your teeth 7 The last straw 8 For donkeys years 9 As cool as cucumber 10 Let the cat out of the bag Something you say when the person you were talking about appears unexpectedly The intuition that a person has about a situation or person, usually when something is not going well. It is the maximum degree that can be reached and fills patience Many years Achieve something for little Not very often To allow a secret to be known, usually without intending to Used to describe someone who is very calm To sound familiar To hope that things will happen in the way that you want them to