A. specialize B. cave C. competitive D. full-length A. soothe B. explore C. superstructure D. guitar A. paper B. shed C. process D. begin A. family tree B. uncle C. risk D. stroll A. gratitude B. heavier C. lawn D. it A. production B. motionless C. puzzling D. output A. underground B. ever C. hurry up D. Swedish A. suit B. also C. exchange D. clearly A. Miss B. why C. in need of D. mess A. compare B. brochure C. backwater D. good evening