A. pair B. fishing C. prove D. acknowledge A. purpose B. blind C. bus driver D. shortly A. show B. seal C. varied D. backstage A. minstrel B. twenty C. give out D. ton A. along B. neither nor C. mumble D. dredge A. milometer B. quite a lot C. face-to-face D. really A. population B. cheeseburger C. astronomy D. That's OK A. pretty B. print C. clap D. sixty A. argue B. argument C. air conditioner D. suddenly A. boulder B. danger C. museum D. no idea