Choose the right forms to complete the sentences. 1) Roy is ... than his brother Jack. a) young b) younger c) the youngest 2) Winters in Moscow now are ... than twenty years ago. a) warm b) warmer c) the warmest 3) Horses are ... than cars. a) slow b) slower c) the slowest 4) Is this book ... in the library? a) old b) older c) the oldest 5) Green Hill is not very ... . a) high b) higher c) the highest 6) Jack's bike is.... It is Jack's birthday present. a) new b) newer c) the newest 7) Is the elephant animal? a) strong b) stronger c) the strongest 8) Sarah! Your hands are ... than your brother's hands! a) dirty b) dirtier c) the dirtiest