I shuffled on my back until they reached only my knees.

She reached down and grasped its thick trunk, then bent her knees.

She sat down when the water reached her knees, and switched on the spa.

The tunic almost reached his knees; he looked like a little boy.

They walk upright even though their arms nearly reach their knees.

There are places you can stand where the water doesn't even reach your knees!

The water reached his knees and raised higher with his every step.

But so did she, one that didn't come close to reaching her knees.

What he settled for was one in which the water barely reached his knees.

Before I reached my knees, a dying man fell on me.