there's no other choice
Fixed expressions related to obligation/necessity.
There is no other choice, we will have to cancel the trip.
—Can we wait longer? —No, there is no other choice but to decide now.
If the material does not arrive, there is no other choice but to postpone the project.
There is no other choice, we will have to cancel the trip.
—Can we wait longer? —No, there is no other choice but to decide now.
If the material does not arrive, there is no other choice but to postpone the project.