II.
1. D
2. C
3. B
4. D
5. C
6. D
7. D
8. B
IV.
1. Sombody has cleaned the room.
-> The room has been cleaned.
2. I get to work in half an hour.
-> It takes me half an hour to get to work.
3. Could you open the door, please?
-> Would you mind opening the door?