提示：Bill到商店买L号的黄衬衫，得知该颜色衬衫已售完，想看看蓝的。售货员说蓝色今年很流行，他试穿后决定买下。

( Bill=B; Shopping Assistant= A)

A:Can I help you，sir?

B: Yes. I'm looking for a yellow shirt.

A：__51__?

B: Size L.

A: Sorry. The yellow ones of your size__52__

B: It's a pity. Do you have that size in blue then?

A: Yes.  Blue is__53__ this year.

B: Well.____54____

A: Sure. Look! It fits you well

B: Yes, it does.____55_____  ?

A: 150 Yuan.

B: OK. I'll take it.