Task 4. In each sentence one word needs the addition of a prefix to give meaning to the sentence. Identify the words which need prefixes and add them. 1. Known as Saint Nicholas in Germany, Santa Claus was usually accompanied by Black Peter, an elf, who punished ________ obedient children. 2. Unemployment and costs have risen to ________ acceptable levels. 3. If he has his opinions on a subject, he is ________ movable. 4. She headed back home and left her mission ________ accomplished. 5. She is a rather ________ trustful person to strangers. 6. It was an ________ mistakable step of his: he had won. 7. It was ________ rational to react in that manner. 8. It is ________ legal to drive while intoxicated. 9. It was ________ modest of them to say that. 10. He had made progress that was previously ________ achievable. 11. It would be ________ accurate to say that she has been dismissed. 12. He felt a growing satisfaction with himself and his position. 13. It is a ________ alcoholic drink. 14. You were ________ attentive at the lecture, that's why you didn't understand anything. 15. The Great Himalayan region is one of the few remaining isolated and ________ accessible areas in the world today.