3. Read the following sentences and divide them into two groups ‘Residential Buildings’ and ‘Industrial Buildings’.

1. In many countries residential construction has constituted at least 12 per cent of all capital formation.

2. The problem of housing has grown into a major, political issue in most countries.

3. Industrial buildings comprise another significant type of construction.

4. Modern buildings have demonstrated the advantages of reinforced concrete arches, metal frames, and glass walls.

5. The differing functions of industrial buildings require their own structural solutions and techniques.

6. Present-day designs for housing envisage all modern conveniences and sanitary fittings.

7. Buildings may be divided into two classes according to whether the plan must give greater attention to the size and movement of machinery or of persons.

8. Windows can be enlarged to the extent that they constitute a large fraction of the wall area.

9. A house which is a physical environment where a family develops is acquiring a new and modern look.