A. conscientious B. all C. stab D. examine A. polite B. make up one's mind C. sweet D. No smoking A. announce B. translation C. careless D. hold up A. opening B. exercise book C. helpful D. gradual A. injured B. careful C. clever D. climbing A. cute B. sweep C. add to D. fiction A. were B. without C. friendly D. titanic A. foolish B. another C. popular D. amphibious A. music class B. tune C. forget D. by coincidence A. first floor B. bark C. escapist D. summit