Определите видовременные формы глагола. 1. a smaller structure has been placed on top of the residence and rotated at an angle. 2. all such projects require a careful balance of practical considerations and aesthetic preferences. 3. rkt & b has maintained many long-term relationships as a result of its dedication to the individual client and to the highest design standards. 4. some cements will give better results in sea water than others. 5. the centre has finally been opened after seventeen years’ discussion and planning. 6. the ancient egyptians often erected their huge constructions to commemorate their kings or pharaohs. 7. asbestos was used in flameproof clothing of many kinds, for laboratory, industrial and military purposes. 8. air conditioning for human comfort is employed in both large and small installations.