It doesn't make any differences. 没关系。

It is a deal！ 一言为定！

Take a seat! 请坐！

Here ye! 说得对！

It can be a killer. 这是个伤脑筋的问题。

Don't take ill of me. 别生我气。

It's up in the air. 尚未确定。

I am all ears. 我洗耳恭听。

Right over there. 就在那里。