Choose the best meaning for the word in bold as it is used in the following text.

A computer reservations system, or CRS, is a computerized system used to store and retrieve information and conduct transactions related to travel.

Choose the most appropriate word to complete the sentence: Please keep your ______ as proof of purchase.

Complete the following sentence:

Our campaigns, mainly ______ to the adult and senior markets, have not been successful.

Choose the correct word for the following definition: a boat or ship for taking passengers and often vehicles across an area of water, especially as a regular service

Choose the correct word for the following definition: a small house, usually in the countryside

Choose the correct word for the following definition: relating to a large city

Choose the correct word for the following definition: a set of rooms for living in, especially on one floor of a building

Choose the most appropriate word to complete the sentence: The use of pesticides is killing off birds, fish and ______.