1.___ sunlight gives us ___ heat. Some of ___ heat warms ____ atmosphere, and some of ___ heat escape back into ___ space. 2. ___ ozon layer stops ___ some of ___ ultraviolet radiation from ___ sun. 3. ___ Alaska has ____ coldest winters in ___ world. 4. You must decide which things are ___ most important. 5. ___ Nile is ___ longest river in ___ world. 6. Which is ___ tallest cathedral in ___world? 7. ___ land in this part of ___ country is fertile. ___ land in ___ west is ___ less fertile. 8. Charles Dichens was born in ___ England. 9. Christchurch is ____ small town in ___ south of ___ England. 10. Dnipro is ___ long river. 11. Is ___ Africa ___ island or ___continent? 12. Poland is to ___ west of ___ Ukraine.