Unit 2 Numbers

4. a word or symbol that represents an amount or a quantity.
9. the vehicles that are on a road at a particular time.
12. to invite sb to enter a competition, fight, etc.
14. a yellow precious metal used for making coins, jewellery, decorative objects, etc.
15. a person's male child.
16. [pl.] something that sb tells you to do.
18. an award that is given to a person who wins a competition, race, etc. or who does very good work. (win a prize in)
19. to tell sb that you will definitely do or not do sth, or that sth will definitely happen. (promise to do sth; make/give a promise)
20. to write sth exactly as it is written somewhere else.
21. to become, or make sth become, twice as much or as many.

1. a unit for measuring weight.
2. able to make sensible decisions and give good advice.
3. in the place of sb/sth.
5. the remaining part of sth. (the rest of)
6. a quantity of sth. (the amount of)
7. a board with 64 black and white squares that chess is played on.
8. to understand or become aware of a particular fact or situation.
10. an unpleasant event, especially in a vehicle, that happens unexpectedly and causes injury or damage. (traffic accidents)
11. accurately; without any mistakes
13. a republic in the Asian subcontinent in southern Asia.
14. a small hard piece of particular substances.
17. a game for two people played on a board marked with black and white squares on which each playing piece is moved according to special rules.
20. to examine sth to see if it is correct, safe or acceptable.