Write sentences using the superlative form of the adjectives and 'in the world'.

Answers: 1. I am the best cook in the world. 2. He is the most careful driver in the world. 3. It is the biggest country in the world. 4. They are the most dangerous spiders in the world. 5. It was the most difficult exam in the world. 6. She was the worst singer in the world.