Read the sentence. when she arrived at the concert hall, the singer walked through a crowd of cheering fans. which word is a preposition?

at, through.

Explanation: a preposition is a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause. In the given sentence, there are two prepositions: "at" which object is "the concert hall" and "through" (through can be a preposition, an adverb or an adjective, but when it is followed by a noun, it is a preposition) which object is "crowd."

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