A. fire extinguisher B. notes C. rely on D. gay A. skim B. academy C. good morning D. fast food A. popular B. civilisation C. ammeter D. archaeology A. limestone B. indiscriminate C. anytime D. botanical A. at war B. transport C. civilized D. receptionist A. howl B. thin C. safe D. sugar A. e-book B. seashell C. silicon D. gold A. abstract B. applaud C. supplement D. married A. shall B. revulsion C. starvation D. electricity A. pen friend B. millionaire C. hammer D. toss