Ответ:
1.I didn't do this exercise two years ago.
2.You don't never see a horse
3. is he ever ride a bike?
4.He is just say that
5. we didn't went to school yesterday
6. they don't have breakfast yet
7. did you hear this song last week?
8. I am never to the USA
9. tom is wrote a letter to Nick five days ago
10. his father is came back to London last Sunday