A：Good morning，sir．（76）　　

B：I'd like to buy a shirt，please．

A：Oh，good! We've got lots of new shirts of different styles．This way，please．（77）　　

B：Let me have a look first．

A：This blue one is made of cotton（棉），and that green one is made of silk．Both of them feel soft and cool in summer．

B：The green one looks nice．（78）　　

A：Of course．Hmm，it fits you very well．

B：Thank you!（79）　　

A：＄78．

B：（80）　　

A：But it really looks beautiful on you．

B：That is true．OK．I'll take it．

A．Can I try it on？

B．Here is the money．

C．Which one do you like？

D．Where is the shirt？

E．What can I do for you？

F．How much is it？

G．That is a little bit expensive．