Read the passage given below and answer the following questions. Travelling is a pleasure. Particularly for the young, the desire to see new places and get the feel of a new environment makes travel a wonderful experience. But do we make it trouble-free for others? Don't start a conversation with the co-passenger without first knowing his willingness to converse with you. He/ she might like to read or have a nap and not necessarily be in a mood to talk. Place your baggage in the rack above your seat. Don't encroach upon another's space. Also wait till the plane/ bus/ train comes to a stop to pull your luggage out. Be eco-friendly- remember that the place where you stand had been visited and has to be visited by thousands more. Carry a plastic bag for waste on sightseeing trips; you can empty it later in a dustbin. "Sustainable Tourism" is the only way to protect the resource and beauty of the earth. If you want to enjoy the hospitality of friends or relatives residing in the place you visit, inform them in advance. Don't drop in like a bolt from the blue. Be considerate towards your hosts. Help your host/ hostess in domestic chores. Go on sight-seeing trips without troubling them to come to your help. Use your own toiletries and towels. Use the telephone of your host sparingly and only when necessary. Don't interfere in their domestic affairs unless you are asked to join. Don't expect your host to attend to your needs all the time.?*