1 Karen is older than her brother.
2 My bag is heavier than your bag.
3 My father is taller than my mother.
4 The Mississippi River is shorter than the Nile.
5 The Atlantic Ocean is colder that the Indian Ocean.
6 Wool is warmer than cotton.
7 Trains are slower than planes.
8 The Empire State Building is higher than the Statue of Liberty.
9 Days in summer are sunnier that days in winter.