A. edifice B. in the form of C. on the contrary D. height A. working B. punish C. writing paper D. practise A. goal B. hurdling C. statistics D. six A. grow B. educate C. hydro-electric D. arsenic A. choice B. acid rain C. geographical D. ignore A. complication B. sit around C. No entry D. fear A. overcome B. come back C. variant D. pioneer A. below B. remaining C. zone D. creative A. fisherman B. pin C. injury D. duchess A. reliable B. sure C. idiomatic D. opposite