Cứu với ............

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`(+)` S + am/is/are + V-ing + adv/O

`(-)` S + am/is/are + not + V-ing + adv/O

`(?)` Am/Is/Are + S + V-ing + adv/O?

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`1.` am watching

`2.` is winning

`3.` is swimming

`4.` are cooking

`5.` aren't watching

`6.` am not doing

`7.` is reading

`8.` isn't listening

`9.` isn't cooking

`10.` is talking

`11.` is playing

`12.` is watching

`13.` is doing

`14.` am eating

`15.` are sitting

`16.` am not writting

`17.` isn't going

`18.` aren't having

`19.` isn't winning

`20.` are driving

`21.` Are they reading

`22.` Are you learning

`23.` Is Helen visiting

`24.` Is Sarah playing

`25.` aren't playing

1. am watching

2. is winning

3. is swimming

4. are cooking

5. aren't watching

6. am not doing

7. is reading 

8. isn't listening

9. isn't cooking

10. is talking

11.  is playing

12. is watching

13. is doing

14. am eating

15. are sitting

16. am not writing

17. isn't going

18. aren't having

19. isn't wining

20. are driving

21. Are - reading

22. Are - learning

23. Is - writing

24. Is - playing

25. aren't playing