根据对话内容：从对话后的选项中选出能填入空白的最佳选项。选项中有两项为多余选项。　　　

─__1__

─I’m looking for a pair of black shoes.

─__2__

─Size eight.

─__3__

─They look nice. __4__

─55 yuan.

─Hmm! That’s a bit expensive. __5__

─Certainly. Here you are.

─Thanks.

─You’re welcome.

A Can I try them on, please

B What about those shoes over there?

C Do you like Those shoes over there?

D How much do they cost?

E What can I do for you?

F I don’t like it.

G What size do you want?