Which tree did they build in?

Acceptable Answer(s)-Blank Space 1

the apple!, the apple tree!, the old apple tree!, an apple tree!, apple tree,, apple tree., the old apple tree,, the apple tree, the old apple tree, the old apple tree., the apple, the apple tree,, the apple., the apple tree., the apple,, an apple tree,, an apple tree, an apple tree., apple tree!, apple tree