4. Choose the correct word.
taller
bigger older
happier fatter
dirtier
longer
younger
Your suitcase is big, but my suitcase is bigger.
This car is old, but my grandfather's car is
The elephant is tall, but the giraffe is
Her bike is dirty, but his bike is ......
My friends are happy, but your friends are
The cat is fat, but the puppy is .....
John's mother is young, but Mary's mother is .....​