我们努力谈判，最终在新办公室的租约上达成了一笔很划算的交易。

We negotiated hard and finally got ___a ___good ___deal on the new office lease.

内部晋升对员工和公司来说通常是一个双赢的安排。

Promoting from within is often ___a ___good ___deal for both the employee and the company.

如果你能把空余房间租出去，那你的房贷就变成了一笔非常划算的买卖。

If you can rent out the spare room, it turns your mortgage into ___a ___very ___good ___deal.