Choose the correct variant. Which verb means to continue for some time?

The letter was posted by I by mistake 2 days ago.

263. 
     Change the sentence into Passive
     

The girl left the notes on the desk.

1. 
   The notes were been left on the desk.
   
2. 
   The girl was left the notes on the desk.
   
3. 
   The notes are left on the desk.
   
4. 
   The notes were left on the desk.
   

264. 
     Change the sentence into Passive
     

Alice wrote an essay yesterday

1. 
   An essay is written by Alice
   
2. 
   An essay was written by Alice
   
3. 
   An essay has been written yesterday
   
4. 
   An essay wrote by Alice yesterday
   

265. 
     Choose the correct sentence in the Passive Voice
     

They bought this house many years ago

1. 
   This house bought many years ago
   
2. 
   This house was bought many years ago
   
3. 
   They were bought this house many years ago
   
4. 
   This house is bought many years ago