Learning a foreign language let me epxloning culture and custom of
>that country.
"learning a foreign language" to jest 3. osoba l. pojedynczej, a więc LETS me explore the culture and customs of that country.
English made my eyes open to a lot of opportunities to
>learn and work in Poland and worldwide.
English opened my eyes to a lot of...
>Besides, I can always get to know new people and extend my horizons,
>for example, when I am going on an exchange.
..broaden my horizons... when I go on a student exchange.
I have never had before so
>great and harmonious group.
I have never before had such a great and harmonious group.