1. I will be snorkelling
2. was making dinner when her kids arrived at home
3. she is lying, she will probably get
4. will buy
5. have you ever beeing
6. have always wanted
7. have been learning
8. go
9. leaves
10. do you live
11. Did you working
12. get, has already started
13. did you doing, didn`t you answer
14. will collect
15. will you buy
16. I have ever seen
17. is (или will)
18. Haven`t you found
19. I will see
20. I have been learning, visited
21. had proposed (или просто proposed)
22. got, noticed, had left
23. was, had a party
24. were, bought
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Советую свериться с правилами по этим временам. Я их изучала очень давно и уже не помню всех тонкостей. Но в целом - как-то так.