A. put away B. Niagara Falls C. opera D. improve A. worker B. upset C. cheap D. everybody A. adjust to B. look up C. termite D. emigrate A. the greenhouse effect B. on sale C. eccentric D. headmaster A. have a try B. language C. tremble D. sadly A. slave B. compact C. triple D. perfect A. Arctic B. face to face C. innocent D. along A. honk B. cheat C. be in with a chance D. lecture A. French B. expensive C. overland D. glare A. grammar B. freezing C. gradual D. highly