С! нужно ! open the brackets, give the comparative and superlative forms of the following adjectives and adverbs. 1. silver is (heavy) than copper. 2. my cigarettes are (bad) than yours. 3. yesterday was the (hot) day we have had this summer. 4. the battle of stalingrad was (great) battle of all times. 5. his plan is (practical) than yours. 6. he is the (good) of my friends. 7. the woman said she had been treated (badly) than a slave. 8. the neva is (wide) and (deep) than the moskva river. 9. this exercise is (good) than the last one. 10. he is (young) as my brother.