20-A Boat in the Tub

名称：20-A Boat in the Tub
内容简介：
He fills the tub. He fills it with warm water. He gets in the tub. He plays with his rubber boat. The rubber boat floats on the water. He pushes the boat down. He pushes it to the bottom. He lets it go. It pops up to the top. It floats on top of the water.