YOU SAID:

Um, I actually worked in that office before you

INTO JAPANESE

あの事務所で働いてた

BACK INTO ENGLISH

I worked in that office.

INTO JAPANESE

私はその事務所で働いていた。

BACK INTO ENGLISH

I worked at the office.

INTO JAPANESE

オフィスで働いてた

BACK INTO ENGLISH

I worked in the office.

INTO JAPANESE

オフィスで働いてた

BACK INTO ENGLISH

I worked in the office.