A. fifteen B. evaluate C. less and less D. copy A. in hospital B. diverse C. garbage D. latest A. crater B. bathe C. pound D. helmet A. encroaching B. rainbow C. hydrogen D. dramatically A. start B. apart C. at the bottom of D. leopard A. several B. attack C. wave D. Africa A. reward B. be based on C. molten D. Rugby A. theme B. bucket C. confused D. volcanology A. observatory B. generate C. pasture D. look up A. grey B. suit C. archway D. snap one's fingers