A. youth worker B. obesity C. by accident D. lesson A. bee B. subject C. union D. retire A. museum B. home and abroad C. timetable D. Chinese knot A. up to now B. eagle eye C. pretty well D. Chinese A. lifelong B. see C. govern D. pineapple A. journey B. competitor C. playground D. introduce A. a pair of scissors B. woman C. special D. music A. revolution B. plant C. welcome back to D. insistent A. cold pill B. beggar C. Monday D. leave for A. maths B. ask for help C. exert D. unwilling