No necesita nada ya lo corrieron
1.estan 2.esta 3.esta 4.estan 5.esta 6.estoy 7.estamos 8.esta
Answer: It looks like you're supposed to use "mañana también" at the end like they did.
So for question 1, I would write "Vas a andar en patineta mañana también."
For question 2, "Voy a leer un mensaje electrónico mañana también."
It might accept your answers using the pronouns, but their model didn't, so I personally would omit them just to be safe. Like for question 4, your answer looks good aside from the fact that they might not accept "mis abuelos" at the beginning.
Answer:
muerto
escrito
los otros no tienen sentido