题目

在横线上填写适当的句子，补全对话A: Good morning! B: Yes, please. I need a T-shirt forschool.A: B: Black.A: B: It looks nice. A: Only five dollars.B: OK. Hereis the money (钱).A: Thank you. 答案：【1】Can I help you?【2】What color do you want?【3】How/What about this one?【4】How much is it?【5】I'll take itWe           here at lunch time; we were delayed at the airport, though. A．could be                                       B．should be C．must have been                       D．would have been