A. rotating B. electrode C. envious D. rapids A. talk quietly B. as usual C. crossword D. telly A. challenging B. fare C. adolescent D. by subway A. midnight B. fierce C. break the record D. recycling A. no B. utilitarian C. waterfall D. a bit A. finally B. hybrid C. pollution D. look out of A. sea level B. videophone C. perturb D. altitude A. meteorologist B. snake C. disadvantage D. college A. determine B. bath C. frost D. Danish A. look up to B. day C. cinema D. beneath