4. Complete the sentences. Use the comparative or superlative form of the words in brackets. 1) Canada is ____ (cold) than Mexico in winter. 2) The Atacama Desert in Chile is ____ (dry) place on Earth. 3) Cairo is ____ (crowded) than Athens. 4) The weather in Madrid is much ____ (warm) than in London. 5) Traffic in New York is ____ (bad) than in Chicago. 6) Mount Everest is ____ (high) mountain in the world. 7) Greenland is ____ (large) island on Earth. 8) The Mayan civilisation is ____ (old) than the Aztec civilisation. 9) Europe isn’t as ____ (big) as Asia. 10) The Amazon is ____ (long) river in South America. 11) The Pacific Ocean is ____ (deep) than the Atlantic Ocean. 12) Australia is ____ (small) continent in the world.