Comparative and superlative form of adjectives

In my opinion, Albert Einstein was ..................... (intelligent)person in the world history.

People feed cats and dogs in their houses.They are both friendly , dogs are ..................... (friendly)than cats.

Cindrella is ..................... (beautiful)than her stepsisters. In the end she marries the prince.

. .....................(tall) building in the world is in Dubai.Its name is Burj Khalifa and it was opened on January 4,2010.

A cobra snake is ..................... (dangerous)snake in the world.When it bites an adult , he dies in seconds.

All the whales are big,but blue whales are .....................(large) animals on earth.

Avatar is probably.........(bad) film I've seen!

Do you think the Harry Potter films are.........(good) than the books?

Is Angelina Jolie...........(old) than Sandra Bullock?

I think Men in Black 1 was...........(funny) than Men in Black 3.