John bought a new bookend for a shelf, but he was frustrated because he forgot that they were supposed to come in what?
Options:
- pair
- a box
- library book
- school library
- library holding books together Let's give stream of consciousness first:
user
Bookends usually come in a pair. Bookends are used to arrange the books next to each other. Only a pair of bookends can prevent the books from falling.
Therefore, the answer is pair.
assistant