tu esposa marta tiene cincuenta y cinco años. Es muy tabajadora
El chico está usando su bicicleta.
Mi abuela está haciendo una sopa de pollo.
Hoy es el cumpleaños de Carlos.
English translation:
"It's good that my friends ____ me with the project for art class."
The Spanish sentence uses a reflexive verb, which indicates that the verb will be applied to a subject. The subject in this sentence is 'me', which means that the speaker is being helped.
The subject acting out the verb is 'mis amigos', which is a third-person plural subject. The conjugation for ayudar that agrees with this subject is ayudan.
I don't see the question you might want to attach it.