A. invisible B. unhurt C. instead of D. recognize A. introduction B. turn C. secondary school D. bewilder A. elderly B. useful C. point at D. be occupied with A. successful B. grow C. reservoir D. different from A. reunite B. sad C. sell D. flies A. exclusive B. moon C. devote D. compare A. skyscraper B. get rid of C. listener D. plus A. officious B. colleague C. develop D. under A. smartphone B. galleon C. eve of the Spring Festival D. Italian A. opinion B. colourful C. pretty D. towel