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A lost college student is texting her classmates for directions. Select ALL the sentences that use prepositions of place correctly.
The correct answers are I am studying at the library today., The science books are on the third floor., and It is very quiet in the library this morning.
Use at or in for the building itself (at the library for the general location, in the library for being inside).
However, when talking about the levels or floors of a building, always use on (e.g., on the second floor, on the third floor).