A. distant B. years old C. laser D. bird A. boundary B. fresh C. heat up D. reptile A. conduct B. fish C. spy on D. abstruse A. hydrogen B. shake hands C. metre D. gym A. trunk B. the United States C. generous D. neighbour A. caption B. whale C. organize D. go boating A. ridge B. police station C. determined D. mammal A. on your right B. tusk C. Forbidden City D. sun cap A. figure B. spend C. elegant D. positive A. difficult B. achievement C. penguin D. travel agent