A. happily B. combination C. science D. dagger A. roof B. pessimistic C. good luck D. involve A. truly B. pig C. play chess D. puzzling A. chimp B. general C. in trouble D. climate A. fundamental B. encourage C. black rhino D. positive A. peanut B. fortune C. reminiscence D. adolescent A. beyond B. occurrence C. terrifying D. govern A. astonishing B. keep fit C. sunny D. script A. crowded B. fifteen C. revise D. slide into A. verse B. finely C. moment D. signal