根据对话中的情景，在空白处填上适当的单词，使对话内容完整 ,每空一词 。  

A: Can I 1______you?

B: Yes, please. I want some 2______for my friends. Do you have any?

A: Yes, we have bags 3______many colors  What 4 ______do you like?

B: We nine girls like yellow.

A: Here are the yellow bags. Do the boys like yellow, too?

B: No, 5______want black ones.

A: How many black bags do you want?

B: Six.

A: Nine yellow ones and six 6 ______0nes. Here are the 7______bags.

B: How 8______ are they?

A: Let me see. Three dollars for each. They are forty-five dollars.

B: OK, I will 9______them. Thank you very much.

A: You are 10______.