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Across 4. a person whose job involves designing and building engines, machines, roads, bridges, etc. 5. to decide that sth that has been arranged will not now take place 6. the activity of making, buying, selling or supplying goods or services for money 8. the knowledge and skill that you have gained through doing sth for a period of time 10. the system of communication in speech and writing that is used by people of a particular country or area 13. an advantage that sth gives you; a helpful and useful effect that sth has 16. an illness affecting humans, animals or plants, often caused by infection 18. not in a place because of illness, etc. 19. an act of travelling from one place to another, especially when they are far apart 20. to make sb do sth that they do not want to do

Down 1. to complete a course in education, especially at high school 2. to find sb/sth that was hidden or that you did not expect to find 3. something that happens unexpectedly and is not planned in advance 7. to become or to make sth greater in amount, number, value, etc. 9. the regular pattern of weather conditions of a particular place 11. to form a picture in your mind of what sth might be like 12. always telling the truth, and never stealing or cheating 14. in or from a country that is not your own 15. something that you hope to achieve 17. the quality in sth that makes it funny or amusing