Read and choose. 补全对话。 Saleswoman: Can I help you? Bill: 1 Saleswoman: What colour do you like? Bill: 2 Saleswoman: How about this pair? Bill: 3 How much are they? Saleswoman: 20 yuan. Bill: 4 Bye-bye! Saleswoman: 5 A. Bye-bye! B. It's a black bag. C. Great! D. How are you? E. I want to buy a pair of shoes. F. Here is the money G. Red.