What will our next task be?
Our next task will be ...
It's not
will be to. It's
will be, the future of
to be. The
to goes with the next word to form an infinitive. You express a task with an infinitive. Put any of the beginnings below with any of the endings.
Our first task was ... to learn the verbs.
Our first task is ... to read the instructions.
Our first task will be ... to decide the route.
CJ