As you might know, I often go for a business trip and traveling abroad. At that time, I take a lot of things when I go abroad such as passport, medicine and clothes. First, passport is very important. I have to carry it everywhere. When I get a flight and to pass for immigration checking. Second, I have an allergy to dust. So I make sure to bring some medicine. Finally, I bring some clothes to change. It's hard for me to do the laundry abroad. Thus, I always bring enough clothes. Without them, I won't be able to enjoy my travel.