Matching Pairs Schema Online version Look at the idioms and match them with the correct definition. by Doribeth Jarquín Calvo 1 Once in a blue moon 2 A piece of cake 3 Speaking of the devil 4 To cost an arm and a leg 5 To see eye to eye 6 It´s raining cats and dogs 7 The cat is out of the bag 8 Burn the midnight oil 9 Cat got your tongue ? to work until late at night agreeing with someone the person you´re just talking about arrives to accidentally reveal a secret something is very easy It´s raining heavily someone is quiet and isn´t talking something is very expensive very rarely