Ladies, thanks for the suggestions and advice. Yes, my holes are from doggies. Will try satin stitching them. Looked in my manual how to do it on my machine. I usually darn? by zigzag stitching over the holes, esp jeans, with some other denim material underneath but this is the 1st time that I thought I should try repairing the sheets as they do have life left in them Once again, thanks to all.