A. falter B. late C. spear D. memorial A. chasm B. Vietnam C. shrug D. duty A. cheetah B. flow C. desert D. be hard on A. employ B. substitute C. hardened D. step A. lifeboat B. clatter C. generally speaking D. homestay A. hand B. announcer C. guilty D. did A. incredible B. mist C. plunge D. frog A. snack B. senior high school C. lobster D. armament A. assemble B. horror C. fly kites D. frustrated A. head B. paintbrush C. confidently D. stem