There are several ways you can find out the countries and places you wish to visit. If you friends have been there, you can talk to them. They may give you detailed and vivid descriptions about the places. Most important of all, they can offer some valuable advice for the trip. For example, which part is more interesting than others? How can you enjoy yourself better? What should you pay more attention to? The advice is all from their own experience. Another way is to consult a travel agency. An experienced agent may offer you a lot of information. Above all, they are always ready to help. Besides, you can also read travel books. They are helpful too. Sometimes, they are better than a friend or a travel agency, because you can always read them whenever you want. Decide the best answer from each group of choices according to the passage.