听录音，选出你所听到的句子的最佳答语。
(     )（1）A. Good morning        B. Good afternoon.          C. Hello.
(     )（2）A. How are you?         B. Yes, I’m Sarah.          C. Fine, thanks.
(     )（3）A. He is my brother.   B. Nice to meet you, too.    C. Hi!
(     )（4）A. Thank you.          B. Bye!                      C. How are you?