YOU SAID:

I heard that mark can’t sleep

INTO JAPANESE

そのマークは眠れないと聞いた

BACK INTO ENGLISH

I heard Mark couldn't sleep.

INTO JAPANESE

マークは眠れないと聞いた。

BACK INTO ENGLISH

I heard that Mark couldn't sleep.

INTO JAPANESE

マークは眠れないと聞いた。

BACK INTO ENGLISH

I heard that Mark couldn't sleep.