9. Let me think about it, and tell you later.
讓我考慮一下，一會兒答復你。
還能這樣說：
Let me think for a moment and tell you later.
I'll think it over and get back to you later.
諺語：
Let every man praise the bridge he goes over.
過橋不忘造橋人。

10. Working so hard for so little, it just isn't worth it.
工作這么辛苦卻拿這么少的錢，實在不值得。
還能這樣說：
Working so hard doesn't match so little money.
Working so hard deserves not so little.
諺語：
We never know the worth of water till the well is dry.
井干方知水可貴。

11. You have the seniority and I know you can do the job.
你具備應有的資歷，你會把工作做好的。
應用解析：
You have the qualifications and I believe you can do the job.
You have the seniority and I think you're qualified to this job.
諺語：
Know something of everything and everything of something.
通百藝而精于一。

12. We've decided to promote you to a Program Manager.
我們決定提拔你做項目經理。
還能這樣說：
We've decided to give you a promotion as a Program Manager.
You could get promoted to be a Program Manager.
諺語：
A snow year, a rich year.
瑞雪兆豐年。