YOU SAID:

Who did do that thing, remember?

INTO JAPANESE

誰がそのことをしましたか、覚えていますか？

BACK INTO ENGLISH

Do you remember who did that?

INTO JAPANESE

誰がそれをしたのか覚えていますか？

BACK INTO ENGLISH

Do you remember who did it?

INTO JAPANESE

誰がやったのか覚えてる？

BACK INTO ENGLISH

Do you remember who did it?