Do you want me to stay on my knees, here?

He stayed on his knees rather than stand bent over.

He stayed on his knees for a long time.

Elizabeth stayed on her knees, as if uncertain what to do.

He stayed on his knees in the water until the sun went down.

He stays on his knees in the sand for a minute.

This time she stayed on her knees, head down.

He stayed on his knees, because that made their eyes more or less level.

He staggered, fighting to stay on his knees, to hold me.

She made a low gurgling sound, but stayed on her knees.