根据短文内容或所给提示，写出空白处单词的正确形式。
每空限填一词。
I am ____ (计划)to travel from London to Amsterdam. There are four ways to travel.
A ____ (旅程) by train is more relaxing ____ by coach, but a lot more expensive.
You can go by car and by ship across the North Sea. This is the ____comfortable way to travel. ____(停车) in Amsterdam is very expensive, so stay outside the city centre and travel in by bus or by train.
The____(three) choice is by coach. This is usually the ____(cheap), but in summer the coaches sometimes get ____(拥挤的)! And it ____(花费)you about twelve hours to get there.
Finally, you can fly. It is the fastest, but you may have to wait for ____(小时 )at the airport because of bad weather.
