I remember being so excited to go to my company. 

⇒ Correct Sentence!

I had always wanted to enter my company and I had some dreams about an exciting and fun life at work.

⇒Correct Sentence!

I wore new clothes that my father bought for me.

⇒Correct Sentence!

When I entered the main entrance, I was so impressed and couldn’t believe that I had became a office worker.

⇒When I entered the main entrance, I was so impressed and couldn’t believe that I had become an office worker. 

I was a little intimidated by the strange atmosphere and the older workers who all seemed very active.

⇒ Correct Sentence!

They all seemed so sophisticated and wise.

⇒Correct Sentence!

I had hard time to find my office. But I was not late.

⇒Correct Sentence!

When I took a seat, I started to talk to a co-worker who was sitting next to me, She worked there for six months.

⇒When I took a seat, I started to talk to a co-worker who was sitting next to me, she worked there for six months. 

I thought I can get help from her when I have a problem later.

⇒Correct Sentence!

Hi Song. Wow! very good composition. I am happy that you show improvements in your composition. Thank you for this again. See you later in class.!

-Meril