题目内容：
阅读下短文，回答 题：根据中文提示，将对话中缺少的内容写在线上。这些句子必须符合英语表达习惯。打句号的地方，用陈述句；打问号的地方，用疑问句。
提示：一位女士在商店为儿子挑选T恤衫，大小和式样都合适，也有喜欢的颜色，但价格太高。
(Shop Assistant = S; Customer = C)
S：Good morning, madam.____________51_________________________?
C：Yes. You see，I'm looking for a T-shirt for my son.
S：We have a large variety of T-shirts. What about this one?
C: Oh. I like it.____________52________________?
S：Let me see... Size 4，6... Yes，we have size 8. Here you are.
C：Urn，but I don't really like this color.__________53______________________?
S：Yes, we also have pink, orange, black, blue, and...
C：Good. I think blue is nice.____________54____________________?
S：It's $ 50.
C：Oh, really? I'm afraid________________55__________________. I'll have to think about it.
请回答第51空：
参考答案：
答案解析：