Sentence examples for he not know from inspiring English sources

Does he not know they're there?

How did he not know already?

"I wondered, How could he not know?" Sonn said.

How does he not know that he's the punchline?!

How could he not know the whereabouts of his animals?

But he not know if there would be protective cushioning.

He said he did not know who.

He said he did not know.

He did not know and he resigned".

Right now, the observer understands that he did not know that he did not know.

He did not know.