Перепишите предложения, обращая внимание на сослагательное наклонение и три типа придаточных предложений условия. 1. If the quality of the equipment were higher the results of the experiment would be more accurate and complete. 2. Many building materials wouldn't have been saved, if reinforced concrete hadn't been widely used in building construction. 3. It would be impossible to make cement without limestone and clay 4. If we used the right water-cement ratio, we should obtain concrete of high strength and durability. 5. It is essential that the dampness should be eliminated from buildings.