A. wood B. ratio C. operator D. mark out A. grind B. Great Wall C. symptom D. sailor A. climax B. follow C. school uniform D. baker A. fundamentals B. air hostess C. teens D. at dusk A. thirteenth B. astronomy C. talk about D. waiter A. tricycle B. force C. cowboy D. in the area of A. enjoy oneself B. left-hand C. lunchtime D. bus driver A. technical B. tidal C. beauty D. mechanic A. northern B. alright C. policewoman D. course A. sip B. float C. station D. doctor