帮忙翻译一下吧（英语）

I think I will work hard and do my best to strive for the opportunities for promotion.

do one's best 尽全力
strive for sth. 争取...

本人翻译仅供参考。

i will work hard, and strive after chance for upper job

I think i will work hard to gain the promotion chance

I'm sure I can strive the chance of promotion through hard work.
显得自信一点,而且语法方面也要高级一点点