Complete the sentences.Use the comparative or siperlative form of the adjectives.
1)An elephant is____(heavy) than a dog.
2)Anna is the___(tall)girl in her class.
3)It rain all week.It was the__(bad) holiday we are ever had.
4)Trains are usually___(fast) than buses.
5)I think playing chess in____(interesting) than playing computer games.
6)It is the____(expensive) CD I've ever bought.