他们下周要长途旅行去日本。

They are ___travelling to Japan next week for a long trip.

我们计划明年乘火车去欧洲旅行。

We plan to ___travel to Europe by train next year.

火车正快速穿越乡村。

The train is ___travelling rapidly through the countryside.

谣言在小镇里迅速传播开来。

The rumor ___travelled quickly around the small town.