根据首字母或汉语提示填空。

1. The _____ (运输) of goods by air is very expensive.

2. He didn't have enough money to pay this train _____ (车费).

3. If you don't speak good English, you will be a big _____ (不利条件) when you try to get a job.

4. The _____ (刊物) makes its appearance once two months.

5. When do you guess the _____ (飞机) will take off?