A. radioactive B. watchdog C. first of all D. lighthouse A. unaware B. tune C. primitive D. summary A. suppose B. remark C. dining hall D. to A. landfill B. bride C. preserve D. movement A. murderer B. rattlesnake C. riverside D. market A. tight B. biology C. frightful D. old A. snake B. beg C. ibis D. force A. remind B. visitor C. paleontological D. dam A. packet B. assignment C. give out D. despair A. composer B. continue C. detective story D. peacock