The ailing patient slowly began to recover after treatment.
She is worried about failing the exam.
She worries about failing unnecessarily.
She ends up failing to keep her promises.
She is terrified of failing the interview.
We ended up failing to reach an agreement.
He is afraid to try again after failing once.
He suddenly realized why the plan was failing.
He risks failing the exam for skipping practice.
He ended up failing to understand the instructions.
He apologized to the team for failing to deliver sincerely.