Prepositions are words that show the relationship between a noun or pronoun and other words in a sentence. The preposition "in" is used to show the position or location of something or someone inside a space or a place. In this sentence, the preposition "in" is used to describe the space where the house is located and where someone can live comfortably.

Explanation:
- Prepositions are words that show the relationship between a noun or pronoun and other words in a sentence.
- The preposition "in" is used to show the position or location of something or someone inside a space or a place.
- In the sentence "This is a comfortable house to live in," the preposition "in" is used to describe the space where the house is located and where someone can live comfortably.
- The sentence means that the house is a comfortable place to live in, meaning that the interior of the house is comfortable and suitable for living.
- The preposition "in" is commonly used with houses, apartments, rooms, and other indoor spaces to describe where someone lives or stays.
- Other examples of prepositions that can be used with the verb "live" include "at" and "on," but they have different meanings and uses. For example, "live at" is used to describe the address or location of someone's home or residence, while "live on" is used to describe the means or source of someone's income or livelihood.

We should not spend money
at
on
for
with