A. wood B. lake C. motorcycle D. staple A. sugar B. endangered C. tetrahedron D. lawyer A. boil B. second-hand C. retreat D. questionnaire A. inquiry B. useful C. sandwich D. tramp A. salad B. pig C. at D. chemical A. taught B. exact C. cream D. bullfight A. question B. cause C. smaller D. e-book A. relay race B. tired C. less than D. kitchen A. risk B. accumulate C. What day is today D. everybody A. looks B. be friends with C. plate D. warmth