No one had moved since the girl sank to her knees.
I stared at the open door, sank to my knees.
When they were sure it wouldn't return, the men sank to their knees.
He was quite willing to sink to his knees before them himself.
Without a word, I went to the boy and sank to my knees beside him.
He sank to his knees to ask her what was the matter.
First a few, then more, and finally all of the soldiers sank to their knees.
Instead, he sank to his knees in front of her.
It was tough going, and they sank in up to their knees.
Even as he sank to his knees, the first field report came through.