How old are these children?
¿Qué edad tienen estos niños?
The ribbon is two inches wide.
La cinta tiene dos pulgadas de anchura.
(d) To be at meaning to attend is translated asistir a.
There were not many at the meeting last night.
No asistían muchos a la reunión de anoche.
(e) To be worth is translated valer. To be worth while is valer la pena.
I don't know how much it is and it isn't worth while to ask.
No sé cuanto vale y no vale la pena de preguntar.