A. arbitrary B. symbol C. preservation D. export A. aid B. navy C. architect D. comedy A. imitate B. project C. yeast D. the Yangtze River A. luggage B. landmark C. adore D. observant A. on the other hand B. megacycle C. recovery D. go to hospital A. grievance B. because of C. fit D. tooth A. carnival B. operator C. longan D. continental A. business B. hum C. fly a kite D. parliament A. word B. sculpture C. wretched D. hi A. region B. be in trouble C. wise D. listener