In guided reading groups, I have been using Hubbard's Cupboard readers for this low group. The text are predictable and there are many of them. The picture support and sight words seem to be helpful to the students. AND they are free!
I created some support materials to go alone with the readers. The student must put together the common sight words in the book from letters. Then construct sentences. Last, they must create their own.
My little one was unsuccessful when we first just read the book, but when the support was there it was easier for the little one. Each and every sentence was read and the understanding was there too....WOO-HOO!
This is what the finished product looks like: