A. torrent B. wire C. substance D. ground A. youth worker B. fourteen C. away D. accident A. A.M. B. grandma C. protein D. pattern A. sincerely B. gradually C. front D. swimming A. a few B. victim C. telephone D. butterfly A. best B. add C. air hostess D. save from A. daily B. borrow C. conceal D. earn one's living A. space station B. show C. warning D. secretive A. biology B. accuracy C. Hong Kong D. settle down A. think twice B. o'clock C. price D. Everest