To go the extra mile
"In English, when you tell someone 'to go the extra mile', you're telling them to make more effort than usual to achieve their objectives:
"If you want to succeed in business, you have to work harder than your competitors. You've to go the extra mile."
For listening comprehension practice, visit the BBC site 'learning English' (the English We Speak, 18 March 2014), which is where I have taken today's idiom definition and example from.
Going by the book
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