So the only alternative is just not to believe her.
The only alternative to sitting here was to drive on again.
Her only alternative was to give up - and she wasn't going to do that.
The only alternative is not to try getting there at all but stay where we are.
So the only alternative is to make them respect you.
And the only alternative was to cut someone else short.
So he takes what seems to be the only alternative.
But I do not believe these are our only alternatives.
Maybe she needed to talk, even if the only alternative meant doing so in a group.
But, given no choice, we took the only alternative there was.