Mostrar is the verd to use. to show.
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....
i'm not mexican so i don't understand the culture. but i will be more than happy to write your answers i'm spanish
Are you supposed to fill in the blank with english answers?
I think it's "Tú eras bajo." because "eres" is present and I'm pretty sure "eras" is the past tense of ser!