請幫我翻譯及改這幾句英文

1. The refined upstairs

2. Catering

3a. I can't have lunch with you,because i am going to interview my job which is
the first job in my life.

3b. I am not able to have lunch with you, because I'm going to interview for a
while, this is my life first job.

3c.我不能夠與你食飯,因為我一陣要去面試工作,這是我人生中第一份工作.

4a. If i studied hard,i think i would pass the final exam.

4b. If I work hard, I think I'll pass the examination

4c.如果我努力學習,我想我會通過考試

1.Upstairs lounge

2.Catering

3.我不能和你午餐，因為我要採訪我的工作這是我一生中的第一份工作。

4.如果我努力學習，我想我會通過期末考試。