A. walk by B. wall C. controversy D. brother A. bye B. running C. existence D. clerk A. a lot of B. the Potala Palace C. oil D. preserve A. by oneself B. snorkel C. sweep away D. labourer A. grape B. standard C. you bet D. face A. sarcastic B. tough C. the Great Wall D. cousin A. hawker B. kebab C. glider D. back A. sure B. seal C. big D. spawn A. peasant B. Mexican C. listen D. skier A. employer B. great C. cultural D. northern