Is the following sentence acceptable ? If you see any problems, please let me have your comments. Thanks a lot!!
1. There were some last minute changes to your proposal, so we were unable to respond to your email at the expected time. We apologize to you for the delay.
2. Under this condition, I think it will be difficult to meet the deadline.
3. I went on a business trip last week, so I couldn't check your email.
4.Thank you for e-mailing me your proposal. I am sorry that I was unable to reply sooner because it took us longer to review it than we thought.
5.The information will be processed in confidence.