Question

highlight all the words that make up the prepositional phrase in the sentence below.
wheeljack whispered quietly in the library.

Explanation:

A prepositional phrase consists of a preposition, its object, and any modifiers. In the sentence "Wheeljack whispered quietly in the library", the preposition is "in", the object is "the library" (with "the" as a modifier). So the prepositional phrase is "in the library".

Answer:

in the library