Printed lyrics on the internet often have small differences from recorded audio, due to transcription errors or artistic licence. In those cases, I always use the recorded version that is most common or popular, as that is what people will know best. For that reason, I have included 'crumbling' and 'ahead' in this quiz. I have fixed the on/one error; thank you for picking it up.
1) 'Come on', not 'come one';
2) 'falling', not 'crumbling';
3) 'Go on', not 'go ahead'.