A. staff B. waterfront C. positive D. refuse A. mineral B. friendship C. estimate D. rice cake A. nation B. calcium C. satisfied D. come on A. noble B. sleepy C. instruction D. flagship A. digestive B. cigarette C. walk D. hiking A. go on a picnic B. greenhouse C. breathe D. sales A. pain B. muffle C. observation D. point to A. fortunately B. no way C. hunger D. academy A. steel B. German C. missile D. knot A. leave B. diet C. Thanksgiving D. town