Please take your white book home and read all about appositives from 535-541. Then complete exercise 3 which will have you combine 8 sentences using an appositive. This will be handed in on paper.
The information about dependent and independent clauses is available in white book starting on page 336 if you are feeling like you need a little grammar review.
And, remember to explore the link in the previous post to find various grammar exercises and answers.