Answer:
1 traegas 2 duermas 3 Tenemos 4 hable 5 comera 6 termine
The answer is b. hayan because haya refers to a single person and hayas refers to a person whos taking to another person.
Desarrolladores is a developer. From a Hispanic :D
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....