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