A. subtle B. shelf C. positively D. opaque A. fit B. else C. twentieth D. relic A. entranced B. rather C. space station D. Japanese A. return B. the greenhouse effect C. not D. practical A. viperine B. lab C. old D. workday A. building B. take down C. district D. gifted A. explorer B. chopstick C. take in D. project A. leftover B. noise C. steamship D. post A. look for B. pupil C. oilfield D. Labour Day A. boot B. the number of C. on the increase D. dance