A. formal B. heading C. subway D. vest A. process B. wall C. herb D. enrich A. argue B. souvenir C. settle down D. quicken A. boo B. permission C. immolation D. elbow A. carbon B. stay away from C. pork D. main unit A. ozone layer B. disappointment C. inhabitant D. speed A. wrestler B. umbrella C. direct D. slack A. lid B. quack C. rural D. geography A. deprive B. occupation C. bunny D. guest A. violently B. immigrate C. classical D. whoops