(一): Excuse me, can I interrupt?对不起，我能插一句吗？

A: Excuse me, can I interrupt?
甲：我能插一句吗
B: Yes, please.
乙：当然可以，您请说。

我能插一句吗：
Sorry to break in.

不好意思，插一句。
I would like to make it clear that…

我想重申一下......

(二): It's up to you.您来决定吧。
A: How do you like it?
甲：您看这样行吗？
B: It's up to you.
乙：您来决定吧。
表示客套的用语，表示“随您方便”、“都可以”：
It depends on you.
As you wish.