Answer:
I canβt go left I canβt go right. I am forever stuck in a building over three stories high.
I am so delicious that I require a house to contain me.
I jump when I walk and sit when I stand.
I am a house with two occupants sometimes one rarely three. Break the walls eat the boarders then throw away me.
I help you carry your books.
What is the middle of water but is not an island?