Перепишите следующие предложения, обращая внимание на вид придаточного предложения. Обратите особое внимание на бессоюзное подчинение придаточных дополнительных и определительных предложений. 1. We decided that we should use the tower crane for hoisting heavy members. 2. When the concrete hardens and sets, the resulting material gains great strength 3. They will study building foundations, subsystems, and structures, and learn how these systems are maintained, repaired, or altered. 4. Concrete that is not workable causes gaps around rods and holes in corners of forms, weakening the concrete and creating a poor appearance. 5. When an engineer designs a steelwork he must carefully consider that the steel frame and every part of it should safely carry all the loads imposed upon it. 6. The main properties engineers look for in concrete are strength, water tightness, durability, and workability.