I chose house like the digest because people enters the house like foods enters the mouth.

The esophagus is like the cave because the cave is long and it is were you can echo like food going through the esophagus.

Stomach is like the factory because they both move ever time a food or electronic comes.

The small intestine is like a road because the food or car takes really long to reach the end.

The large intestine is like a towel because the Both absorbed water.