bài đâu ạ

I. 

1.take => taking            2. drive => driving            3. see => seeing                 4. argee => argeeing

5. open => opening       6. enter => entering           7. happen => happening    8. try => trying

9. play => playing         10. work => working         11. speak => speaking       12. get => getting

13. travel => traveling   14. lie => lying                  15. winning

III. 

2. My grandfather is buying ........

3. Hannal isn't studying .......

4. Is she running ....?

5. My dog is eating ....

6. What is you waiting .....? 

7. Their students aren't trying ..... 

8. All of Jack's friends are having ........

9. My children are traveling ......

10. My little brother is drinking ......

11. Listen! Our teacher is speaking

IV.

1. B

2. A

3. C

4. C

5. B

6. A