1. education
2. peaceful (a)
3. silently (adv) 1 cách yên lặng
4. Correspondence
5. famous (a)
6. impressed
7. friendly (a) thân thiện
8. instruction
9. compulsory
10.separate
11. purposefully
12. disagree
13. calculation
14. collection
15. in comparison with: so với
16. Competitive
17. advantage

III. SUPPLY THE CORRECT FORM OF THE WORDS IN PARENTHESE:
5, famous
6, impressive
7, friendliness
8, instruction
9, compulsory
10, separately
11, purposely
12, agrees
13, calculations
14, collection
15, comparation
16, competent
17, advantages
18, description
19, punished
20, unbelievable