A. walnut B. squeeze out C. graph D. devastation A. the Great Wall B. up to now C. futile D. merciful A. excuse B. amphibious C. secondary D. award A. advertisement B. badly C. tetrahedron D. steepen A. convenient B. fascination C. photography D. throughout A. easy B. spit C. competence D. feeling A. star in B. disappointing C. lesson D. associate A. do some research B. now and then C. Nigerian D. modern A. dig out B. set out C. needle D. earphone A. ring back B. queen C. acquire D. crucible