谁来翻译"你是谁？我是你以前的同事！哦，真的吗？是的没错。”译成英文？

你是谁？ Who are you?
我是你以前的同事！I'm your former colleague/workmate.
哦，真的吗？Oh,really?
是的,没错。 Yes,that's right.

Who are you?
I am you previous colleague.
oh, really?
Yes

Who are you?

I used to be one of your colleages!

Yeah? Really?

Yes, that's true.

--who are you ? / who is it ?
--your former colleague
--oh, really ?
--yes, there is no doubt about it !