As ...as, not so/as...as

Tigers are as strong as elephants.

English is not so difficult as Art.

January is as long as December.

Cars are as fast as bikes.

In spring it is not so cold as in summer.

Monkeys are as clever as people.

In summer days are as short as in winter.

Parrots are as nice as cats.

Kyiv is not so big as Lviv.

My parents are not so old as my grandparents.