Answers to all of the practice questions and section A exercises are on pages 275-301. Being able to check answers is a great help when you are working on your own. There are no answers to section B exercises, so that teachers are able to set work for their students to complete unaided.
Why are there no accents?
This is discussed in the book on page 17. Basically, there are no accents in The Elements of New Testament Greek for two reasons. First, accents were not in use in writing when the New Testament was written - they are a later invention. Second, they don't help and are a huge amount of extra work. (In the handful of situations when they do help, they are used and explained in the book.)
