Matching Pairs act 1Online version tarea 1 by Gabriela Enriquez 1 well-thumbed 2 to curl up 3 head-on 4 5 narrow-minded 6 7 Mouth-watering 8 to kneel 9 to crouch 10 Bloodcurdling 11 to shiver 12 13 14 15 to fold your arms 16 17 eye-catching 18 to clench your fist 19 to cross your legs 20 first-hand to grit your teeth to flex your muscles To nod to frown to duck to clear your throat