If I shout for help, who knows what he'll do?

Of course, someone might hear, but that was always a risk when you shouted for help.

"We could open one of your office windows and shout for help."

And of course, she could not be able to shout for help, either.

If you are alone, shout for help and begin first aid.

I stood alone in the star field again, shouting for help, and no one came.

And then, after a while, he began to shout for help.

Then he sat down and began to shout for help.

I shouted for help, but there was no one around.

He shouted for help, couldn't even hear his own voice.