In what Office program? If you did it in powerpoint you could hyperlink between slides. Have a slide with all the questions hyperlinked to the individual answer slides, and each answer slide with a hyperlink to return to the question slide. I can explain this in more detail if you think it will meet your needs. Also I dunno if it will work on iphone, I'll look at it tomorrow with one that I made and see. I'm pretty sure if you save it as a pdf with hyperlinks it will work on iphone but let me get back to you. In the meantime maybe someone else has a better solution?