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The first houses were merely shelters for the purpose of protecting their owners from weather and therefore were very simple – a roof to keep of the rain, and walls to keep out the wind. 1 _______. A little later each house had its fireplace and a masonry chimney. 2 _______. There was no water supply, no heating system, and no electric light. 3 _______. First, there was running water in the kitchen, then hot water and later fully equipped bathrooms.
4 _______.
In the beginning there were no windows.
For many years, even centuries, houses were built without any conveniences.
Very gradually a change came about, especially in cities.
The latest thing is air conditioning.