I wonder how the fire started.Do you think it was an accident.<br/><br/>1.No the police say it couldnt be an accident.<br/><br/>2.No the police say it couldnt have been an accident.<br/><br/>which one is correct?? No.1 or No.2 or both of them are correct<br/><br/>if yes what is the difference????<br/><br/>thanks alot