Relier Pairs IdiomsVersion en ligne Match the idiom with the correct picture. par Karla Izquierdo 1 Costs an arm and a leg 2 To hear something straight from the horse's mouth 3 A pig with lipstick, is still a pig 4 A chip off the old block 5 As mad as a hatter 6 Barking up the wrong tree 7 All that glitters is not gold 8 Apple of my eye 9 As red as a beetroot 10 Once in a blue moon