Exercise 3. rewrite the sentences using the nominative with the infinitive = complex subject 1.it seemed that the beam was fixed. 2. we know that houses are often built of complete concrete structural units nowadays. 3. it turned out that the builders have set the partitions of the rooms not according to the plan. 4. it is heard that greek builders became second to none in column building. 5. we consider that buildings with exterior walls made of wood comprise the most inflammable type of construction. 6. we believe that concrete is one of widely used building materials. 7. it is known that concrete is made of cement, sand, crushed stone and water. 8. we know that plastics combine all the fine characteristics of a building material with good insulating properties. 9. it is reported that a new bridge has already been constructed.

1.The beam seemed to be fixed.
2. Houses are known to be often built of complete concrete structural units nowadays.
3. The builders were turned out to have set the partitions of the rooms not according to the plan.
4.Greek builders are heard to  have become second to none in column building/Greek builders were heard to become second to none in column building.
5. Buildings with exterior walls are considered to be made of wood to comprise the most inflammable type of construction.
6. Concrete is believed to be one of widely used building materials.
7. Concrete is known to be made of cement, sand, crushed stone and water.
8. Plastics are known to combine all the fine characteristics of a building material with good insulating properties.
9. A new bridge is reported to have already been constructed.