Choose the correct option

1. It was a mystery
   [which|whose] he knew nothing
   [around|about].
2. There was a big oak tree
   [inside of|next to] my window and I could touch the leaves.
3. The door was closed and the windows were shut but a strange sound was coming
   [from inside|from behind] the building.
4. At the end of the puppet show the actors came
   [from inside|from behind] the screen to take a bow.
5. After all, I found the remote control
   [in between|from within] the sofa and the wall.
6. The time was short but we managed to visit the castle
   [out on|prior to] boarding the ship.
7. It is hard to imagine but my little sister has grown
   [out of|up to] my chin.
8. We lost the game
   [because of|as for] bad weather.
9. To pass the exam you need to answer at least ten questions
   [apart from|out of] fifteen.
10. My house is
    [near to|outside of] the office and I walk there and back home.
11. We set
    [out on|out of] our journey exactly as planned.
12. You can sit
    [next to|prior to] me.