YOU SAID:

I wouldn't have spent that year in college if it wasn't for my horse

INTO JAPANESE

私の馬がいなかったら、その年は大学で過ごしなかっただろう。

BACK INTO ENGLISH

Without my horse, I wouldn't have spent the year in college.

INTO JAPANESE

私の馬がいなかったら、私は一年を大学で過ごしなかっただろう。

BACK INTO ENGLISH

Without my horse, I wouldn't have spent a year in college.

INTO JAPANESE

私の馬がいなかったら、私は大学で一年も過ごしなかっただろう。

BACK INTO ENGLISH

Without my horse, I wouldn't have spent a year in college.