Complex subject

Active

1. to play (для настоящего и будущего )

2.to be playing( для настоящего длительного)

3.to have played(Для прошедших действий)

4.to have been playing(для прошедшего длительного действия)

Passive:

5. To be played(для настоящего и будущего )

6. To have been played ( для прошедшего)

1. it is considered that Yury Dolgoruky founded Moscow. - Считается, что Долгорукий  основал Москву. Это предложения можно "ужать" так:

Yury Dolgoruky is considered to have founded Moscow (3)

1. It is known that best BMW cars are produced in Kaliningrad.- Известно, что лучшие БМВ автомобили производят в Калиниграде.

   Best BMW cars are known to be produced in Kaliningrad (5)

2. It is claimed that the power blackout finished yesyerday.

   The power blackout in Crimea is claimed to have finished yesterday ( 3.)

   4. It is expected that he will arrive on time. He is expected to arrive on time (1)

   5. It is known that this make was discontinued.

   This make is known to have been discontinued (6)

   6. It is said that she is taking an exam. She is said to be taking an exam (2)

   7.He is thought to have been spying (4)_ Известно, что он шпионил.