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.
Mochila is a backpack.
Things like:
un escritorio - a desk
una ventana - a window
una silla - a chair
la escuela - the school
la pizarra - the chalkboard
Hope this helps.<3
Have a great day!!