Choose the right word for each gap.

Travelling
Modern life is impossible without travelling. Thousands of people travel every day either on business or for pleasure. They can travel by air, by rail, by sea or by road.
Travelling by sea is very popular. Large ships and small river boats can visit foreign countries and different interesting places. A trip by sea is usually called a ... or a cruise. It's wonderful to feel the deck of the ship under the feet, to see the rise and fall of the waves, to feel the fresh sea wind blowing in the face, ... the cry of the seagulls.
Of course, travelling by air is the fastest and the most convenient way, but it is the most ... too. But the cheapest and enjoyable way to travel is walking in the forest and country.
Travelling by train is slower than by plane, but it has its advantages. You can see much more interesting places of the country you are travelling through. Modern trains have very comfortable ... . There are also sleeping cars and dining cars which make even the longest journey enjoyable. Speed, comfort and safety are the main advantages of trains and planes. That is why many people prefer them ... all other means.