Ответы и объяснения

1) Tokyo is the most expensive city in Japan
2) The Nile is the longest river in the world
3) Spain is not cold as Norway
4) Mount Everest is the biggest mountain in the world 
5) The hottest place on Earth is the Sahara Desert  
1) the biggest 2) the longest 3) cold 4) the sunniest 5) the hottest 6) most expencive