YOU SAID:

I don't know you say one

INTO JAPANESE

私は 1 つを言うことを知らない

BACK INTO ENGLISH

I don't know what to say one

INTO JAPANESE

1 つを言うことを知らない

BACK INTO ENGLISH

Don't know what to say one

INTO JAPANESE

1 つを言うことを知っていません。

BACK INTO ENGLISH

Do not know that one.

INTO JAPANESE

その一つを知っていますか。

BACK INTO ENGLISH

Know is one of them.

INTO JAPANESE

知っているそれらの一つです。

BACK INTO ENGLISH

It is one of those that know.

INTO JAPANESE

知っているそれらの一つです。

BACK INTO ENGLISH

It is one of those that know.