9. I feel dizzy and I can't concentrate on my work.
我头晕而且不能专心工作。
还能这样说：
I am light in head and I could not fix my eye on my work.
I have dizziness in my head, so I can't fix my attention.
谚语：
Feel no qualms upon self-examination.
扪心无愧。

10. I failed to get the approval.
我没有被准假。
还能这样说：
I was rejected to ask for a leave.
The boss didn't approve my application for leave.
应用解析：
invoice approval 发票的核准；
official approval 正式批准

11. May I have two days off?
我能请两天假吗？
还能这样说：
May I ask for two days off?
Can I have a rest for two days?
应用解析：
turn the day against sb. 使某人不利；
live out one's days 过了一辈子；
all in a day's work 日常工作；
day after day 日复一日，每天

12. Do you mind if I take tomorrow off?
你介意我明天请假吗？
还能这样说：
Do you care about my taking tomorrow off?
Do you have any complaints if I take tomorrow off?
应用解析：
mind one's work 专心于工作；
mind your own business 少管闲事；
mind public opinion 在乎公众的舆论；
mind the rules 服从规定