根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项，并将答案填入相应番号之后的横线上。选项中有两个为多余选项。
Woman: Can I help you, sir?
Man: ____ 
Woman: OK. What about this pair?
Man: Sorry, I don’t like black. ____ 
Woman: Yes ,we do. We also have got blue, brown and white
Man: ____ 
Woman: Yes, please.
Man: How much does each pair cost?
Woman: Eighty-six dollars.
Man: It’s too dear!____ 
Woman: How about seventy dollars?
Man: No, it’s still dear. What about sixty?
Woman: Sixty? Er…all right. Try them on, please.
Man: That’s fine. I’ll take this pair.  ____ 
Woman: Thank you. 

观察中国象棋的棋盘，其中“马”的位置可以用一个数对（3，5）来表示，则表示“兵”点位置的数对是____ 

双曲线$\frac{x^2}{a^2}-\frac{y^2}{b^2}=1\left(a>0,b>0\right)$的左右焦点为,$F_1,F_2,P$是双曲线上一点，满足$\left|P{F}_2\right|=\left|F_1{F}_2\right|$,直线$P{F}_1$与圆$x^2+y^2=a^2$相切，则双曲线的离心率为（   ）