Choose the right types of holidays to complete the sentences.

Okay, I will help you complete the sentences with the correct types of holidays. However, since I do not have the answer options, I will provide the most likely answers:

1. A holiday by the sea is called a beach holiday.
2. A holiday in the mountains is called a mountain holiday or ski holiday (if it's in winter).
3. A holiday in the centre of a city is called a city break.
4. A holiday on a ship is called a cruise.