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Ex1/
6. has
7. is shining
8. rises
9. drinks/is drinking
10. wants
11. are/doing/am watching
12. am listening
13. always come
14. does/do/watches/listens
15. is shouting/is continually shouting
16. takes
17. is boiling
18. boils
19. stay
20. celebrate

Ex2/
6. was/kicked
7. was lying
8. woke/missed
9. were watching/began
10. worked
11. went
12. was cleaning/found
13. dropped/spilled
14. were working/lived
15. was studying/read
16. taught
17. taught
18. always asked
19. watched
20. was running/fell

Ex3/
6. played/was
7. hasn't seen
8. lost/ has been
9. didn't go
10. have not met/left
11. have never heard
12. Have/finished
13. has already packed
14. Have/met
15. met
16. Have/ever flown
17. have eaten
18. Did/ride
19. has ridden
20. has played/got

6.has

7.is shining

8.rises

9.drinks-is drinking

10.wants

11.are you doing-am watching

12.am listening

13.always come

14.does Susan do-watches

15.is shouting-continually shouts

16.takes

17. is boiling

18.boils

19.stay

20.celebrates