YOU SAID:

He knows if you've been bad or good so be good for goodness sake.

INTO JAPANESE

彼はあなたが悪かったか良いか知っていますので、よかったです。

BACK INTO ENGLISH

I am glad that he knows you were bad or good.

INTO JAPANESE

私は彼があなたが悪いか良いことを知ってうれしいです。

BACK INTO ENGLISH

I am glad that he knows you are bad or good.

INTO JAPANESE

私は彼があなたが悪いまたは良いことを知ってうれしいです。

BACK INTO ENGLISH

I am glad that he knows you are bad or good.