go that far; to that extent
necessary; needed; essential; necessity; need; requirement
thought; consideration; thinking
standing by; awaiting an opportunity; being on alert
to be saved; to be rescued; to escape harm; to be spared damage; to be helped; to be saved trouble
to be silent; to say nothing
to fail; to mess up; to bungle; to screw the pooch
to be effective; to take effect; to work; to function well; to be possible (to do, use, etc.); to be able to