Use "i regret that" in a sentence

1. I regret that I cannot help.

2. I regret that I shall not be able to come.

3. I regret that the point is not an agreeable one

4. Sometimes I regret that I cannot do more because of my health.

5. I regret that we do not feel able to vote in favour of accession at this time.

6. On March 8 came the answer: “I regret that after consideration I am unable to accede to your request.”

7. To this day I regret that my calculations went "Agley"; but I was told that accommodation was not to be secured at Malta "for love or money," and soBirds of the Rockies