I.

1. A

2. B

3. B

4. A

5. B

6. D

7.C

8. D

9. A

10. C

11. C

12. A

13.B

II/

1. went

2. didn't watch

3. the most best

4. haven't finished 

5. has never studied

6. has never missed

7. Do...have....

IV/

1. C

2.B

3.B

4.D

5.B

II/

1.B

2.C

3.D

4.A

5.B

III/

1.B

2.A

3.B

4.C

5.C

IV/

1....play video game for many hours.

2....most intelligent in her class.

3....got a bad mark, he didn't learn the lesson.

4....throw trash onto the river.

5....go to school because he was sick.

6....is the most exciting cities in thr world.

7....drawn on the desk.

V/

1. I wrote a postcardlast week.

2. How long have you learned English ?

3. We have just bought interesting book.

4. These books English are more expensive than those boooks in my schoolbag.

5. Linh has never seen a dinodaur before.

6. They have never seen a dragon before.

( Có gì sai sót mong bạn bỏ qua ><)