在下面对话的空白处填入适当的话语(话语可以是句子、短语或词)。(5分)
A: _______________________, Tina?
B: My birthday is on December 7th. You know, today is my birthday.
A: Oh, Happy birthday to you!
B: _______________________, Lucy.
A: I want to buy a gift (礼物) for you. Let’s go to the store. OK?
B: Great! Thanks very much.
(In the store)
C: ________________________?
A: Yes, please. I'm looking for a pair of socks for my friend.
C: What color does she like? A: She likes black.
C: What do you think of these socks?
A: They’re great. _______________________? C: 20 yuan.
A: OK, ________________________. Thank you.