Use the derivatives of the words on the right to complete the sentences. 1. Atomic submarines' are an important part of warships. 2. Silvia smiled a friendly, slightly ____. 3. I was getting more and more ____ climatic changes can seriously influence the Earth. 4. ____. 5. Susie speaks English with a ____. 6. How many ____ institutions are there in this locality? 7. His ____ tastes are well known. 8. This old clock was a present from my father and has a ____ value. 9. Our ____ team has won the match. 10. We have always been ____ and we have always been sure of our success. 11. Our ____ working hours are from 9 till 6. 12. George is a very ____ person.