根据情境，选择恰当语句补全对话。   

A: 1.           

B: Yes, please. I want a T-shirt.

A: Look at this one.

B: I don't like the colour.

A: 2._____

B: Yellow.

A: OK. What about this one?

B: It's big. 3._____

A: 4._____

B: That's lovely! 5._____

A. Have you got a small one, please?

B. I'll take it.

C. Can I help you?

D. What colour do you like?

E. Try this one, please.

《神华集团露天煤矿本质安全管理考核评分标准》规定，无人值守的的变电亭（移动变电站）的门应设置为向外开，并应加锁，在门口处应张贴或悬挂（）字样的警示标识。

A.工作重地不得入内

B.危险重地不得入内

C.未经许可不得入内

D.危险不得入内