Can u pleas answer this

2. whom was that picture painted by?
3. how will trains be driven in the future?
4. what are traffic jams caused by?
5. where has your car been taken?
6. why was the train cancel?
7. whom had the room been cleaned by?

1. will be changed
2. are not eaten
3. hadn't been stolen
4. was painted
5. will be opened
6. are not written

1. are used
2. were they invented
3. was first developed
4. is considered
5. made
6. have become
7. are owned
8. is spent