A. period B. wallet C. deed D. solution A. yuan B. endless C. letter D. hi A. at home B. bird C. Infallibility D. crash A. risk B. fatuous C. worthless D. technically A. aircraft B. cookies C. restrict D. six A. thank you B. flight C. dilapidated D. similarly A. couldn't B. elapse C. savings D. pow-wow A. permission B. broken C. iron D. villager A. serious B. curly C. in the end D. polish A. ID number B. let off C. penniless D. contents