YOU SAID:

The fish listened intently to what the frogs had to say.

INTO JAPANESE

魚はカエルの言うことを熱心に聞いた。

BACK INTO ENGLISH

The fish listened intently to the frog.

INTO JAPANESE

魚はカエルに熱心に耳を傾けた。

BACK INTO ENGLISH

The fish listened intently to the frog.