A. locked B. injury C. photo D. most A. dog B. ecosystem C. Antarctic D. once or twice A. friend B. university C. pack up D. Seemingly A. good B. cut rice C. salt D. be born with A. farmhouse B. said C. flew D. policeman A. breakdown B. bag C. far D. navigation A. go off B. president C. potassium D. soldier A. despair B. trolleybus C. Chinese New Year's Eve D. toe A. melt B. family C. scrape D. at the top of A. bring out B. takeaway C. run away D. who