English Translation
We were playing tennis.
Wrong tense.
私たちはテニスをしました。= We played tennis. OR We have played tennis.
私たちはテニスをしていました。= We WERE playING tennis.
We were playing tennis.
Wrong tense.
私たちはテニスをしました。= We played tennis. OR We have played tennis.
私たちはテニスをしていました。= We WERE playING tennis.