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Ex1/
1. have
2. wants
3. helps
4. does your mother go
5. Does Mr Vinh usually go
6. want
7. dances
8. washes
9. don't watch
10. do you go
11. does your mother go
12. Do they learn
13. misses/cries
14. has
15. sets/rises
16. rains
17. wash
18. doesn't go
19. visit
20. does
Ex2/
1. is going
2. isn't playing
3. am not talking
4. Are the children playing
5. isn't talking
6. is playing
7. are studying
8.  am playing
9. is sleeping
10. is going
11. Are the playing
12. is coming
13. is singing
14. is having
15. are studying
16. is going
17. is crying
18. Is your brother sitting
19. are trying
20. are cooking
21. are talking
22. am not staying
23. is going
24. are travelling
25. isn't working

Ext1

1: have         11: goes

2: wants        12: learn

3: helps          13: misses  / crys

4: goes          14: haves

5: goes          15: seds

6: wants         16: rains

7: dance        17: wach

8: wasbs        18: doesn't go

9: don't watch   19: visit

10: goes          20: do

Ext2

1: goes       14: haves

2: doesn't play      15: study

3: doesn't talk      16: goes

4: plays         17: crys

5: doesn't talk       18: sits

6: plays           19: try

7: stody        20: cook

8: phays        21: talks

9: sleeps       22: doesn't stay

10: goes        23: goes

11: play         24: travel

12: come       25: doesn't wolk

13: sings