A. The window would be closed by the company.
B. The window will be closed by the company.
C. The window is closed by them.
D. The window will be closing by the company.

A. The database is prepared by them.
B. The database would be prepared by John.
C. The database will be prepared by John.
D. The database will be preparing by John.

A. The car was designing by my mother.
B. The car is designed by them.
C. The car was designed by my mother.
D. The car is designed by my mother.

A. The email could be played by the manager.
B. The email can be played by the manager.
C. The email is played by them.
D. The email can be playing by the manager.

A. The exam is installed by them.
B. The exam is being installed by my mother.
C. The exam is being installing by my mother.
D. The exam was being installed by my mother.

A. The tickets has been delivered by the owner.
B. The tickets had been delivered by the owner.
C. The tickets has being delivered by the owner.
D. The tickets is delivered by them.

A. The meal is installing by the police.
B. The meal was installed by the police.
C. The meal is installed by the police.
D. The meal is installed by them.

A. The car has being started by the chef.
B. The car has been started by the chef.
C. The car is started by them.
D. The car had been started by the chef.

A. The database was solved by the teacher.
B. The database is solving by the teacher.
C. The database is solved by the teacher.
D. The database is solved by them.

A. The message is played by them.
B. The message is played by John.
C. The message was played by John.
D. The message was playing by John.