Watch the video about river buses in London. Fill in the gaps.

We're on the river bus, another public ... here in London. There are 24 different ... where you can get on the river bus and the ... that you pay for your journey ... on how many zones you travel through. There are 3 of them: Central, East, and West. The boat is actually really nice. There's even a cafe on ... and a toilet. It's actually a really ... to travel around London if it works out for your route, but the downside is it's probably the most ... to get around London.