7.A:Good morning! B:Good morning! A:(51)F? B:Yes,please,I need a bag for school. A:Ok,(52)A? B:Blue. A:(53)E? B:It looks nice.(54)B? A:Ten dollars. B:I'll take it. A:Here you are. B:Thank you. A:(55)C.
A.What color do you want? B.How much is it? C.You're welcome D.How are you. E.How about this one? F.Can I help you.