Answer 1

6B 7D 8A 9D 10B 11D 12C 13A 14B 15B 

III.

16 different

17 visitors

18 harmful

19 peaceful

20 national

IV.

21D 22A 23D 24B 25C

Answer 2

6 B

7 D

8 A

9 D

10 B

11 D

12 C

13 B

14 B

15 B

III

1 different

2 visitors

3 harmful

4 peaceful

5 national

IV

1 D

2 A

3 D

4 B

5 C

Answer 3

em cảm ơn các anh chị

 

Answer 4

6B 7D 8A 9D 10B 11D 12C 13A 14B 15B 

III.

16 different

17 visitors

18 harmful

19 peaceful

20 national

IV.

21D 22A 23D 24B 25C