No hay nada encima de la mesa. If you sound it out, it could either be "nada" or "nadie" but if you are talking about an object, then use "nada". If you are talking about someone not on the table, you would use "nadie" Nada: for object, Nadie: for person.
Hope this helped
Answer:
you can use this app it might help. photo math. it's not just for math
Question 1: c) para describir acciones habituales del pasado
Question 2: d) estar
Question 3: b) era, nadaba
Question 4: a) ibamos
Question 5: b) sería
Question 6: a) Yo solía caminar cada día.
Question 7: d) Sara estaba enferma,
Question 8: c) We always used to study before the tests.
Question 9: b) iba, hacía
Question 10: d) Veníamos para casa y llovía.
The first one ''Correr'' is run. And ''Parque" is park.