YOU SAID:

Ears are used for listening

INTO JAPANESE

耳は聞くのに使われる

BACK INTO ENGLISH

Ears used to listen

INTO JAPANESE

耳は耳を傾けていた

BACK INTO ENGLISH

The ears were listening

INTO JAPANESE

耳が聞いていた

BACK INTO ENGLISH

My ears were listening

INTO JAPANESE

私の耳は聞いていました

BACK INTO ENGLISH

My ears were listening