Are you finished? Are you done? How would I say this in Spanish?

Question

"Are you finished? Are you done? "

How would I say to my students in Spanish? I'm asking if they are done with their work.

Answer 1

Ya acabaron con su tarea....................

or Ya terminaron con la tarea.

Answer 2

¿Has terminado? or ¿Terminaste?

Answer 3

has terminado?* /has acabado?*