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