Twins told their neighbor we would be gone until Sunday , We checked the house , locked the doors , hit the gas , and open road here we come . We put our next student pilot lesson CD in the player ( basic flight safety practices and procedures ) . Later one of the twins got a book out of her backpack and they started reading to me . One would read and the other twin would make the sounds .

Generate a question about the above context.
Why did we lock the doors ?
Possible answers: - Because we put our next student pilot lesson CD in the player .; - Because we checked the house .; - None of the above choices .; - Because we hit the gas .;