A. That book is mine.
B. He has a book.
C. She gave him a book.
D. They are reading books.
Answer: That book is mine.
A. That book is mine.
B. He has a book.
C. She gave him a book.
D. They are reading books.
Answer: That book is mine.
Additional Information: 'Mine' is a possessive pronoun indicating ownership of the book.
Subjects: Pronouns, Parts of Speech