English Language · Idioms and Phrases

Select the option that indicates the combination of statements in which the idiom/phrase in bold is correctly used. I. To ensure the new banking software was glitch-free before the nationwide rollout, the technical team had to burn the midnight oil. II. Since the CEO had been public speaking for decades, delivering the keynote address at the global summit was a piece of cake for her. III. The audit committee decided to leave no stone unturned by choosing to ignore the major discrepancies found in the quarterly financial statements.