听句子，选出该句的最佳答语。 (     )1. A. Here you are.              B. Thanks a lot.              C. See you tomorrow. (     )2. A. That's all. Thank you. B. I'm afraid I can't. C. What beautiful flowers! Thank you. (     )3. A. Glad to see you. B. I'm sorry to hear that. C. It doesn't matter. (     )4. A. Not at all. Nothing serious. B. Don't worry. You can do it well next time. C. No problem. We can wait for you. (     )5. A. Hold on, please. B. My name is Brown. C. I don't like him.