First of all, I must apologize as to not keeping the promise given to you. I promise that it will send a report of the results, read research reports to within the duration, but I won't be able to do it as OK.
First of all I must apologize for not being more pledges provided to you. I vow to submit its findings to report results during the period. But I was not able to do as agreed.
First of all, I apologize sincerely to keep my promise to you. I promised to send the report to the report to read within the time period. But I can't do it as agreed.