A. boarding B. crash C. aboard D. first floor A. mattress B. in hospital C. sick D. economy A. universe B. duty C. uncrowded D. draw up A. clear B. orbit C. secrecy D. get back A. cinema B. iceberg C. issue D. royal A. cheaply B. crowded C. astronomer D. ring out A. cultural B. sprained C. in need D. overwhelm A. mania B. cable car C. congratulation D. peaceful A. make a sentence B. photograph C. scrape D. rectangular A. backstage B. dropped C. topography D. pitfall