Write the comparative or superlative. 1.The twenty-second of December is (short) day in the year. 2. Silver is (heavy) than copper. 3. His plan is (practical) than yours. 4. The Don is (wide) and (deep) than the Moskva river. 5. Elbrus is (high) peak in the Caucasian mountains. 6. The Trans-Siberian railway is (long) in the world. 7. Iron is (useful) of all metals. 8. This room is (small) than all the rooms in the house. 9. London is (large) city in Great Britain. 10. This exercise is (easy) than the last one. 11. My cigarettes are (bad) than yours. 12. This is (short) way to the station. 13. Novorossiysk is one of the (big) ports on the Black Sea. 14. Your room is (good) than mine. 15. The Moscow underground is (good) in the world.