No me pregunte = do not ask me
No le diga= don’t tell him
No los añada= don’t add them
No los compre= I did not buy them
En 1995, Miguel Tenía 15 años
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:
No <u>compraron</u> objetos undustriales.