用括号中所给单词的正确形式填空，使短文内容完整、正确。

Many people like  (travel) by plane, but I (not like) it because an airport is usually far from the city. You have to (get) there early and wait for hours for the plane to take off and it is often late. You can't   (open) the windows. You can't choose the food. (plane) are fast, but it still (take) hours (get) out of the airport and into the city. I like  (travel) by train. I think trains are safe. Railway stations are usually in cities. When you are late for a train, you can catch another one. You can go  (walk) around on the train. You can see many  (interest) things on your way. I know it takes a little more time.