一 Why do you choose to work in an international travel agency?一 Well, you know, English is my  . So it is my best choice.

We look forward to the day when the motorcar has been replaced by some less dangerous ____ of transport.

The mountains form a natural            between the two countries so they have no trade relations in history.

The song Lost In Love was an instant ______ in Australia.

He lost all his ______ in the big bush fire.