convertir a pasado las siguientes oraciones respetando si es positivo , negativo o interrogativo

1: they are not doing their Homework yesterday at 3 ó clock ( negativo )

2: is he watching or just sleeping ? ( interrogativo )

3: she is my friend

4: María is in the apartment

5: My parents are working when I came Home

6: we are not living in a small flat in London ( negativo )

7:she is listening to music when I called

8: is It raining when You left ? ( interrogativo )

9: Pedro is not missing ( negativo )

10: Carlos and on the second floor .

AYUDAAAAAAA​