A. slowly B. less than C. jazz D. dig A. professor B. prehistoric C. run out of D. cereal A. archaeologist B. the greenhouse effect C. or so D. working A. eyewitness B. penalize C. pants D. be full of A. insoluble B. release C. hovercraft D. suffer from A. doorknob B. whoever C. Antarctic D. vitality A. cannibal B. sort C. clearly D. character A. date back B. on foot C. livelihood D. mental A. cherry B. tether C. belong to D. seventeen A. compulsory B. aspect C. affect D. Russia