Подчеркните в каждом предложении глагол-сказуемое и определите его видовременную форму и залог.
1. It will help us to define the dimensions of the cube.
2. For more than four centuries telescopes have been the Earth`s window on the universe.
3. The telescope is housed in a tower with a revolving 1000-ton dome.
4. A great many scientists from various institutes were involved to work at the design of the hydro engineering complex.
5. A special group worked at the system of television control.
6. Physics is one of the ancient sciences about nature.

1. It will help us to define the dimensions of the cube. (future simp active)
2. For more than four centuries telescopes have been the Earth`s window on the universe. (pres perf active)
3. The telescope is (pres simp active) housed in a tower with a revolving 1000-ton dome.
4. A great many scientists from various institutes were involved to work at the design of the hydro engineering complex. (past simp passive)
5. A special group worked at the system of television control. (past simp active)
6. Physics is one of the ancient sciences about nature. (pres simp active)