Unit 4

3. the best or most suitable
4. very small cut made on the edge or surface of something
6. in or through the middle of a group of people or things
7. something wrapped in paper, packed in a box, and then sent by mail or delivered
9. to completely understand and begin to use new ideas, information
10. to change, or to make someone or something change
12. done or made in the traditional or original way
13. done or made in the traditional or original way
16. a change, discovery, or invention that brings progress
17. a long stick or post usually made of wood or metal, often set upright in the ground to support something
18. more useful, interesting, satisfactory, effective, suitable
19. to help a plan, idea, feeling etc to develop

1. a trick or something unusual that you do to make people notice someone or something
2. the hard pointed thing that grows, usually in pairs, on the heads of animals such as cows and goats
5. a small flat plastic case containing magnetic tape, that can be used for playing or recording sound
6. becoming more powerful or popular
8. to look angrily at someone for a long time
10. a large quantity of something
11. he speed at which something happens or is done
12. having plenty of money, nice houses, expensive things
14. to become or make something become lower in price or value
15. not paying enough attention to what you are doing, so that you make mistakes