1. My room is ____the cleanest_____________ room in my house.                                                  (clean)

2. This is _____the cleverest____________ robot I've ever known.                                                    (clever)

3. In my opinion, John is one of _____the luckiest____________ men in the world.                       (lucky)

4. Mount Everest is ___the highest______________ mountain in the world.                                  (high)

5. Sam draws ___the best______________ pictures of the doctor robots.                                  (good)

6. The blue whale is __the biggest_______________ animal in the world.                                      (big)

7. This is Ant Robot, one of __the tiniest_______________ robots in this show.                          (tiny)

8. I'm sure this is ____the strongest_____________ robot in this competition.                                   (strong)

9. Our robot gave ___the quickest______________ answer among 20 robots in this round.             (quick)

10. This is _____the darkest____________ color we can use to paint our robot.                             (dark)

11. This is ___the tallest______________ robot in the show. It is two metres tall.                        (tall)

12. Tokyo is one of ___the largest______________ cities in the world with 37 million people. (large)

13. She usually buy ___the cheapest______________ clothes in the store.                                        (cheap)

14. ______The longest___________ river in the world is the Amazon. It is in Brazil.                      (long)

15. Riko is __the heaviest_______________ of the three robots.                                                      (heavy)