Active or Passive?
The train is going to arrive late
George was stopped by a policeman.
Simple past.
I made a mistake.
A mistake was made.
The grapes are grown in California.
Passive
English is spoken in Australia.
Simple present
The door is being opened.
The car is standing at the garage.
Active
The door is being opened.
Present progressive
The hamster can be kept in a cage.
A new hospital has been opened today.
Present perfect
He has solved the puzzles.
The puzzles have been solved.