A. keep doing B. apple C. plank D. thunderstorm A. come B. born to C. radiation D. no problem A. sheriff B. muddy C. park D. mere A. by bike B. ring back C. coal D. cheongsam A. for a start B. assume C. Statue of Liberty D. by subway A. by ship B. collect picture cards C. fantasy D. catch sight of A. Beijing Opera B. ambulance C. at dusk D. on foot A. film B. applaud C. ignore D. challenge A. straightforward B. absorbing C. by plane D. bargain A. trade B. usually C. necessity D. front