Even though the auditors _____ the accountant, his reputation was _____ by the allegations of fraud.
Even though the auditors _____ the accountant, his reputation was _____ by the allegations of fraud.
Explanation
The sentence should read: "Even though the auditors exonerated the accountant, his reputation was tarnished by the allegations of fraud."
This means that although the accountant was found not guilty (exonerated), the accusations of fraud still damaged his reputation (tarnished).