Write 7 words for every category: Continents, Countries, Cities

Russia, South America, London, Madrid, Africa, Great Britain, Asia, the USA, Tokio, Rome, Spain, Europe, China, North America, Antarctica, Moscow, Japan, Pekin, Australia, Italy, Washington.

Continents:Africa,Europe,Asia,North America,South America,Australia,Antarctica
Countries:Russia,Great Britain,the USA,Spain,China,Italy,Japan
Cities:London,Madrid,Tokyo,Rome,Moscow,Pekin,Washington