Necesitamos el libro o lo que tu resuelves. No puede Hel, p a menos que lo tenga.
Well, for one those come to America from other countries need to know basic manners to get jobs and to make living here.
Nosotros somos de Guatemala.
Because ser is for more permanent things, like character traits or nationalities, while estar is more for temporary things like feelings or current location
How to remeber ser and estar easy
for how you feel or where you are, always use the verb estar