Fill in the blank with the most appropriate word:
Anna wasn’t looking where she was going and she walked ______ a lamp post.

Hint: Prepositions are only used to denote the location of a noun, not any other time. They can really help to clear up the meaning of the sentence or even emphasize it at times.

Complete answer:
 Prepositions are words that are used to show positions, locations, direction, and time. They are usually in front of nouns and gerunds.
Example - In the sentence ‘There is a lamp on the table’, the word ‘on’ describes the location of the lamp. So, it is a preposition. There are many verb + preposition combinations in English, which are easy to learn, like ‘go up’. Prepositions indicate relationships between other words in a sentence. They can be extremely important parts of a sentence, as they can give you important insight into the meaning of the sentence.

For example, in the sentence ‘We saw a movie at the theatre’, we understand where the movie was seen. It clearly conveys that the movie was not seen at any other location. This is an example of a preposition of location. There are many more kinds of prepositions.

Depending on which preposition is used after a verb, the meaning of the sentence can completely change. The preposition used makes a big difference. For example, ‘turn back’ and ‘turn off’ have two completely different meanings, even though the root verb is the same.

Now, we know what we are looking for. Let’s look at the meaning of the given sentence-
The given sentence says that the person in the given situation was not looking where she was going, i.e. she was being careless. This means that it is very likely that she did not see the lamp post in front of her. So, the person collided with it.
The preposition that most appropriately describes this situation is ‘into’. This preposition refers to ‘expressing movement or action with the result that someone or something makes physical contact with something else’.
So, the correct answer will be written in the following way-
Anna wasn’t looking where she was going and she walked into a lamp post.

Note:
Make sure to go through the parts of speech of the sentence and choose the preposition that makes the most sense. Also, make sure that the sentence remains grammatically correct.