Word forms:

1. visitors

2. national

3. peaceful

4. different

5. famous

6. education

7. instruction

8. friendliness

9. tropical

10. widely

11. different

12. beautiful

13. prayer

14. regional

15. compulsory

16. separation

17. religious

18. beautiful

Bài 2.

1. divided

2. currency

3. capital

4. religion

5. national

6. instruction

7. compulsory

Word forms:

1. visitors (n)

2. national (adj)

3. peaceful (adj)

4. different (adj)

5. famous (adj)

6. education (n)

7. instruction (n)

8. friendliness (n)

9. tropical (adj)

10. widely (adv)

11. different (adj)

12. beautiful (adj)

13. prayer (n)

14. regional (adj)

15. compulsory (adj)

16. separation (n)

17. religious (adj)

18. beautiful (adj)

Bài 20.

1. divided: phân chia

2. currency: đơn vị tiền tệ

3. capital: thủ đô

4. religion: tôn giáo

5. national: thuộc quốc gia

6. instruction: sự hướng dẫn

7. compulsory: bắt buộc