1. complete the definitions. 0. a large building with many apartments. an apartment (block). 1. a room or area in a building that is under the level of the ground a 2. a house joined to another house on one side. a house. 3. the structure that covers the top of a building. a 4. it allows smoke from a fire to pass out of a building up into the air. a
2. semi-detached house
3. roof
4. vertical pipe