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Susie walked up the steps to the library, then stopped at the doors and sighed. The small red book seemed heavy in her hand. She looked up at the sky, then took a deep breath, pushed the doors open, and went inside. Susie slowly walked to the circulation desk. Without looking at the librarian, she placed the book on the desk. "Susie Smith?" she said, while Susie stared at her shoes. "You do realize," she said, "that this book isn't due for another week, right?" Susie looked up, her face spreading into her usual outgoing smile. Which phrase from passage gives you a clue about the mood? a. "walked up the steps to the library" b. "stopped at the doors and sighed" c. "pushed the doors open" d. "placed the book on the desk"
What is B, "stopped at the doors and sighed"