Ответ:
1. Where does your brother work ..? He works…
2. Was your grandmother sleeping when you came ….
3. What will your brother do …
4 . I didn't go … I will go …
5 . Where was Kate going … you met …
6 . they are skating …
7 . Did you skate … we were skating …... We will skate ….
8 . skates
9 . What are you doing … I'm enjoying…
10. What were you doing …. I was having dinner.
11. Are you having …
12. enters
13. entered
14. When will the boss come …
15. we were listening …
16 . entered … the secretary was typing …
17. rang ….
18. My friends are playing ….
19 . Kate doesn't write …
20. Did you see …
21. Did your father go ….
22. What did Nick do ….
23. When does Nick get up ….
24. Where will your mother go …
25. I will invite …
26. took place …. was keeping ….