Ваши ошибки я выделила.
ex.2
1. do
2. watch
3. like
4. walk
5. come
6. read
7. go
8. like
9. love
10. watch
ex.3
1. isn't watching
2. isn't studying
3. is watching
4. is playing
5. isn't reading
6. is Maria lestening..
7. is Beatriz tidying...
8. are reading