A. chess B. mosquito C. twenty-one D. ozone layer A. young B. at most C. be good for D. delay A. at first B. strongly C. injury D. effective A. mimic warfare B. no doubt C. put off D. cookie A. step B. victory C. nerve D. guy A. disappearance B. stress C. daily D. Paris A. finish B. mess C. cook meals D. glove A. further B. moral C. below D. pneumonia A. ideal B. nomination C. expert D. loser A. blossom B. Spain C. epidemic D. store