A. at B. everywhere C. do one's best D. yield A. plane B. a box of C. calf D. downstairs A. determine B. embryo C. under D. amphibious A. give speeches B. exhibition C. player D. except A. archaeologist B. moo C. yeah D. glove A. fresh B. machinery C. impressionist D. tape A. bookcase B. gap C. volume D. whom A. table B. mamba C. biology D. retire A. editor B. room C. orbit D. aesthetic A. ordinary B. staff C. pulse D. model