YOU SAID:

I went to the store and bought eggs, they were rotten and i couldn't return them.

INTO JAPANESE

私は店に行って卵を買った、彼らは腐っていて、私はそれらを返すことができませんでした。

BACK INTO ENGLISH

I went to the store and bought eggs, they were rotten and I couldn't return them.

INTO JAPANESE

私は店に行って卵を買い、腐っていて返すことができませんでした。

BACK INTO ENGLISH

I went to the store and bought an egg, and it was rotten and I couldn't return it.

INTO JAPANESE

私は店に行って卵を買いましたが、腐っていて返すことができませんでした。

BACK INTO ENGLISH

I went to the store and bought an egg, but it was rotten and I couldn't return it.

INTO JAPANESE

私は店に行って卵を買ったが、腐っていて返せなかった。

BACK INTO ENGLISH

I went to the store and bought an egg, but it was rotten and I couldn't return it.