Which of the following has a mistake?
I want to write about the books I have read, but I have written very few reviews so far.I want to write about the books I have read, but I have written very little so far.I want to write about the books I have read, but I have written very fewest reviews so far.I want to write about the books I have read, but I have written fewer reviews than I have read books.I want to write about the books I have read, but I have written less than I wanted to.