Помогите с заданием Give the superlative form of the adjectives in

Помогите с заданием
Give the superlative form of the adjectives in brackets.

1. The Pan-American Highway is (long) road in the world. 2. The Beatles were (successful) pop group. 3. Japan has (crowded) railways in the world. 4. This is our (old) national airline. 5. The Chrysler Building was once (tall) in the world. 6. Is English (useful) language to learn? 7. This is one of (expensive) stores in the city. 8. The Queen must be (rich) woman in the world. 9. Unfortunately, I haven't heard (late) news. I think it was very interesting. 10. Is the Mona Lisa (valuable) painting in the world? 11. His house is (far) in the street. 12. February is (snowy) and (cold) month of the year here. 13. (dangerous) spider is the black widow, whose bite can kill a man in a few minutes.14. The world's (expensive) perfume costs 550 per bottle. 15. (deep) part of the Pacific Ocean is 11 kilometres below the sea-level. 16.1 wonder what his (near) step is going to be. 17. Who are (old) members of the club? 18. It was (late) thing I expected of him. 19. The diamond is (hard) mineral in the world. 20. His house is (far) in our street.