3 Complete the sentences with transport words.

Okay, let's fill in the gaps with transport words: 1. You can travel by air in a **plane**. 2. You can travel by water on a **boat** or a **cruise**. 3. A lot of people can travel together in a **bus** or a **car**. 4. You pay a **taxi** driver to travel in his car. 5. London has got **trains** and an **underground**, but it hasn't got a **tram**.