<span>1.Designers <u>have
drawn up</u> (Present Perfect Active) a list of the most interesting buildings
of the city.
2.The Bolshoi Theatre <u>belongs</u> (Present Simple Active) not just to Moscow
but to all of Russia.
3.The theatre <u>was built</u> (Past Simple Passive) on sandy ground.
4.New Metro lines <u>are being built</u> (Present Continuous Passive) in
different cities.
l think 3D printer will improve our lives, because it can print fully-functional machines. This incredible invetional will transform our lives beyond our imagination.