A. disturbing B. worker C. radioactive D. passport A. tool B. over again C. clothing D. certain A. indoor B. hope C. trifling D. test A. easy-going B. depend on C. excitement D. shuttle A. at the same time B. hi C. contents D. wearer A. progress B. expect C. secretary D. group A. half-time B. form C. joy D. colour-blind A. keep a diary B. at birth C. crazy D. fragile A. make a list B. volcano C. North American D. proposition A. then and now B. homestay C. sharpen D. article