In Spanish, "Adious" does not mean anything. "Adios," however, means, "Goodbye."
Answer:
¿Ya hiciste la tarea?
Sí, <u>las</u> hice anoche.
Explanation:
'Las' because it refers to one thing: 'la tarea'. Also, it is a feminine noun.
There can be different amounts so it depends on where/
By reading the sentence I would put
A mi maestro le gusta escribir en la pizarra.
But, there are many adjectives in Spanish that would suit this sentence. Tell me if this is what you need, if not let me know....