A. red B. knee C. voyage D. prince A. plunge B. four C. sour D. problem-solving A. joy B. circular C. technique D. dreadful A. premium B. impose C. mixture D. joust A. lifeboat B. wetland C. virus D. it A. boldly B. sent C. Christmas D. gel A. development B. flood C. class D. sound A. familiarity B. happening C. duty D. Japan A. replace B. go C. float D. pair A. wealth B. navigation C. photographic D. narrowly