1)he/happy/his sister 2)history/difficult/maths 3) cable tv/good/satellite tv 4) watching tv/important/doing homework 5) my sister and my brother/tall/me 6) dubai/big/paris 7) my mother/old/my father

He is happier than his sister
Histore is more difficult that Math
Cable TV is better than Satellite
Whatching TV is more important than doing homework
My  sister and my brotherare taller than me
Subai is bigger than Paris
My mother is older than my father