context: It seems like a cop out.
answer_0: Previously, i suppose, it was the only way the book could end.
answer_1: Eventually, i suppose, it was the only way the book could end.
answer_2: Specifically, i suppose, it was the only way the book could end.
answer_3: Unsurprisingly, i suppose, it was the only way the book could end.
answer_4: Together, i suppose, it was the only way the book could end.
answer_5: Ultimately, i suppose, it was the only way the book could end.
answer_6: Though, i suppose, it was the only way the book could end.
answer_7: Subsequently, i suppose, it was the only way the book could end.
answer_8: Moreover i suppose, it was the only way the book could end.
answer_9: In fact, i suppose, it was the only way the book could end.