I... anything in my life to be ashamed of...
1) was never done
2) have never done
3) had never done
4) didn't never do

You know,... the instructions you gave me rather misleading
1)I've found
2) I had found
3) I have been found
4) I am finding

Much better results ... by the athlete before he joined our club
1)had shown
2)have shown
3) were being shown
4) had been shown