A. labor B. change into C. twenty-one D. Chinese opera A. ignore B. zip C. Spring Festival D. athlete A. actually B. chewing gum C. nail D. riddle A. national B. conservation C. believe D. Nazi A. actress B. sight C. exclaim D. eve A. luck B. price C. alter D. slippery A. emerge B. wear glasses C. trick or treat D. hear A. planetary B. Christmas C. cowboy D. tame A. Santa Claus B. sales C. the media D. be likely to A. boiled water B. unit price C. sweet D. bathe