Supply the correct forms of the adjectives in the brackets. Add "as" if necessary

Supply the correct forms of the adjectives in the brackets. Add "as" if necessary
1.Nguyen Du is (famous)of all Vietnamese poets
2.This is ( high) building in city
3.Steel is ( useful) than diamond
4.She is (pretty)than I am
5.This lesson is ( difficult) than that one
6.The weather today is ( nice) than it was yesterday
7.An elepant is ( heavy) than a rhino
8.An ant is (big) as a beetle
9.February is ( short ) month of the year
10.A rabbit is (fierce) as a tiger